A quick release trolling motor mount solves one specific problem: letting you pull a bow-mount motor off the deck in seconds without unbolting anything. Whether you trailer your boat, share a motor between two vessels, or just want a clear casting deck at the end of the day, the right bracket turns a fifteen-minute job into a ten-second one. The catch is that most of these brackets look nearly identical online, and the differences that actually matter — composite versus aluminum construction, which Minn Kota models they accept, and whether they handle high-thrust motors — only show up in the fine print.
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After comparing the options side by side, the Minn Kota MKA-21 stands out as my top overall pick because it is the bracket all the aftermarket versions are copying, with the most predictable fit and included stainless hardware. The Sixcow MKA-21 replacement is the best value play for anglers who want the same design at a lower cost, while the anodized aluminum MKA-16-03 bracket is the one to buy if you run saltwater and want metal instead of composite. One warning that applies to almost every bracket here: none of them accept 112 lb thrust motors or shafts 72 inches or longer, so heavy-rig anglers need to look elsewhere entirely.
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Key Takeaways
- The Minn Kota MKA-21 is the benchmark bracket that every other option in this lineup replicates, and it remains the safest fit-and-finish choice
- The aluminum MKA-16-03 replacement is the only metal option here, making it the strongest pick for dedicated saltwater anglers
- All five brackets exclude 112 lb thrust motors and shafts 72 inches or longer — heavier rigs need the Minn Kota MKA-53 instead
- Composite aftermarket brackets (Sixcow, B0CB84RW5K) trade a lower price for shorter warranty coverage compared with OEM
- Every bracket in this comparison requires drilling into the deck for permanent installation, and none include a padlock for the locking pin
| Minn Kota MKA-21 Quick Release Bracket for Trolling Motors |  | Best Overall | Compatible motors: Ulterra, Terrova, PowerDrive, PowerDrive V2, PowerDrive Pontoon, DeckHand 40 | Material: High-yield composite | Weight: 3.9 lbs | VIEW ON AMAZON | See Our Full Breakdown |
| Aluminum Trolling Motor Quick Release Bracket for Minn Kota Motors |  | Best for Saltwater | Compatible models: Ulterra, Riptide Ulterra, Terrova, Fortrex, PowerDrive, PowerDrive V2, PowerDrive Pontoon, DeckHand 40 | Replaces: 1854035 / MKA-16-03 | Material: Anodized marine-grade aluminum | VIEW ON AMAZON | See Our Full Breakdown |
| Sixcow Quick Release Bracket Compatible with Minn Kota MKA-21 (1854021) |  | Best Value | Compatible with: Ulterra, Terrova, Riptide ST/SP, PowerDrive, PowerDrive V2, PowerDrive Pontoon, DeckHand 40 | Replaces: Minn Kota MKA-21 / 1854021 | Material: Marine-grade composite | VIEW ON AMAZON | See Our Full Breakdown |
| Quick Release Mounting Bracket for Minn Kota Trolling Motors (Replaces MKA-21 / 1854021) |  | Best Security Features | Compatible motors: Ulterra, Terrova, PowerDrive, PowerDrive V2, PowerDrive Pontoon, DeckHand 40 | Replaces: MKA-21 / 1854021 | Material: Corrosion- and UV-resistant composite | VIEW ON AMAZON | See Our Full Breakdown |
| Quick Release Mounting Bracket for Minn Kota Trolling Motors (RTA-17 / 1854017) |  | Best for Matching White Decks | Compatible motors: Ulterra, Terrova, Riptide ST, Riptide SP, PowerDrive, PowerDrive V2, DeckHand 40 | Replaces: RTA-17 / 1854017 | Material: Composite | VIEW ON AMAZON | See Our Full Breakdown |
| quick release trolling motor mount | Material | Weight | Replaces | Compatible motors |
|---|---|---|---|---|
| Minn Kota MKA-21 Quick Release | High-yield composite | 3.9 lbs | — | Ulterra, Terrova, PowerDrive, PowerDrive V2, PowerDrive Pontoon, DeckHand 40 |
| Aluminum Trolling Motor Quick | Anodized marine-grade aluminum | 2.03 kg | 1854035 / MKA-16-03 | — |
| Sixcow Quick Release Bracket C | Marine-grade composite | 1.78 kg (approx. 3.9 lbs) | Minn Kota MKA-21 / 1854021 | — |
| Quick Release Mounting Bracket | Corrosion- and UV-resistant composite | 1.78 kg | MKA-21 / 1854021 | Ulterra, Terrova, PowerDrive, PowerDrive V2, PowerDrive Pontoon, DeckHand 40 |
| Quick Release Mounting Bracket | Composite | 1.8 kg | RTA-17 / 1854017 | Ulterra, Terrova, Riptide ST, Riptide SP, PowerDrive, PowerDrive V2, DeckHand 40 |
More Details on Our Top Picks
Minn Kota MKA-21 Quick Release Bracket for Trolling Motors
This is the bracket the entire category is built around, and it earns the top spot for that reason alone. The MKA-21 is the OEM part Minn Kota designs its bow-mount motors to pair with, which means fit tolerances, engagement of the locking handle, and alignment with the motor base are exactly what the factory intended. The aftermarket brackets later in this list are patterned after it, and in my comparison the differences show up in small ways: hardware quality, molding precision, and the confidence that the part number on the box matches what your motor manual calls for.
The low-profile composite base sits nearly flush with the deck when the motor is removed, so it does not become a trip hazard or an obstruction for casting. The locking handle accepts a padlock, which matters if you store your boat where theft is a concern — though the padlock itself is sold separately. Compared with the aluminum MKA-16-03 below, the composite build is lighter and immune to corrosion, but it is less rigid under a heavy motor bouncing across chop. Compared with the Sixcow clone, you get included stainless steel mounting hardware rather than sourcing your own, which partly justifies the OEM premium.
Where this bracket falls short is the same place every composite option here falls short: it is not rated for 112 lb thrust motors or shafts 72 inches and longer. Minn Kota directs those buyers to the heavier-duty MKA-53. If you run a big Riptide or Ulterra on a coastal boat, this is not your bracket.
Pros:- OEM part with factory-matched fit across Ulterra, Terrova, PowerDrive, PowerDrive V2, Pontoon and DeckHand 40 motors
- Low-profile base keeps the deck nearly flush when the motor is removed
- Stainless steel mounting hardware and locking pin are included
- Locking handle accepts an optional padlock for theft deterrence
Cons:- Not compatible with 112 lb thrust motors or shafts 72 inches or longer
- Padlock sold separately
- Priced above functionally similar aftermarket copies
Best for: Anglers who want the factory-matched bracket for a standard-thrust Minn Kota bow-mount motor and prefer predictable OEM fit over saving money
Not ideal for: Owners of 112 lb thrust motors or 72-inch-plus shafts, who need the MKA-53 instead
- Compatible motors:Ulterra, Terrova, PowerDrive, PowerDrive V2, PowerDrive Pontoon, DeckHand 40
- Material:High-yield composite
- Weight:3.9 lbs
- Hardware:Stainless steel mounting hardware included
- Security:Locking pin accepts optional padlock
- Mounting type:Bow mount, bolt-on
- Water type:Freshwater rated
- Exclusions:Not for 112 lb thrust or 72-inch-plus shafts
Our verdict“The benchmark quick release bracket — buy it if OEM certainty matters more than the savings an aftermarket clone offers.”
Aluminum Trolling Motor Quick Release Bracket for Minn Kota Motors
This is the only bracket in the lineup built from marine-grade anodized aluminum rather than composite, and that single difference defines who should buy it. Aluminum does not flex the way composite does under a heavy motor, which makes this bracket better suited to open-water saltwater boats where a Riptide or Ulterra gets bounced hard across chop and wakes. The anodized coating stands up to salt spray far better than bare metal, and the side screw and locking system hold the motor more positively than the simple pull-pin designs on the composite clones.
Compared with the MKA-21 above, this bracket trades the OEM pedigree for stiffness and a broader model list — it adds Fortrex and Riptide Ulterra compatibility that the MKA-21 does not claim. That makes it the pick for freshwater bass anglers running a Fortrex, a group the rest of this lineup largely ignores. The tradeoff is weight: at 2.03 kg it is the heaviest option here, and installation is a two-step job because mounting plates must attach to both the deck and the motor before the quick release function works.
Compatibility is also stricter than it first appears. It only fits the listed Minn Kota models, so if you run a MotorGuide or a newer Minn Kota outside the list, measure and verify before ordering. For listed motors in harsh water, though, this is the most durable choice of the five.
Pros:- Anodized marine-grade aluminum is stiffer than composite and built for saltwater
- Adds Fortrex and Riptide Ulterra compatibility beyond what the MKA-21 covers
- Side screw and locking system secure the motor more firmly than pull-pin designs
- Mounting hardware included in the package
Cons:- Heaviest bracket in the lineup at 2.03 kg
- Installation requires mounting plates on both the deck and the motor
- Strict compatibility list — unlisted motors will not fit
Best for: Saltwater anglers and Fortrex owners who want a stiff metal bracket that shrugs off corrosion and heavy motor loads
Not ideal for: Anglers wanting the lightest possible deck setup, or those running motors outside the listed compatibility list
- Compatible models:Ulterra, Riptide Ulterra, Terrova, Fortrex, PowerDrive, PowerDrive V2, PowerDrive Pontoon, DeckHand 40
- Replaces:1854035 / MKA-16-03
- Material:Anodized marine-grade aluminum
- Weight:2.03 kg
- Locking system:Side screw with locking mechanism
- Included:Mounting hardware
- Warranty:12 months
- Mounting type:Quick release, dual-plate
Our verdict“The pick when composite feels too flexible — metal construction and the broadest Minn Kota model coverage in this comparison.”
Sixcow Quick Release Bracket Compatible with Minn Kota MKA-21 (1854021)
The Sixcow bracket is a direct clone of the MKA-21 at a noticeably lower price, and it is the smart buy for anglers who want the proven design without paying the OEM premium. The dimension that matters most — compatibility across Ulterra, Terrova, Riptide ST/SP, PowerDrive V2, Pontoon and DeckHand 40 motors — matches the original, and the marine-grade composite build resists rust, UV, and saltwater oxidation just as the OEM part claims to.
Where it differs from the MKA-21 is in the details. The tool-free release works the same way, the low-profile base leaves the deck flush, and the locking pin hole accepts a padlock — but you are relying on a shorter track record than Minn Kota’s decades of production. To its credit, Sixcow backs the bracket with a 30-day money-back guarantee and a 12-month warranty, which is more assurance than most generic clones offer and close to what the OEM provides.
One advantage over both the MKA-21 and the white RTA-17 replacement at the end of this list: this bracket explicitly lists Riptide ST and Riptide SP compatibility, which the OEM MKA-21 listing does not spell out. If you run a mid-thrust Riptide in brackish water and want to save money, this pick makes more sense than paying OEM prices. The same exclusions apply — no 112 lb thrust motors, no 72-inch-plus shafts — and drilling is required for the base plate.
Pros:- Replicates the proven MKA-21 design at a lower price
- Explicitly compatible with Riptide ST and SP models in addition to the standard Minn Kota list
- Marine-grade composite resists rust, corrosion, UV and saltwater oxidation
- 12-month warranty and 30-day money-back guarantee included
Cons:- Shorter brand track record than OEM Minn Kota parts
- Not compatible with 112 lb thrust motors or 72-inch-plus shafts
- Requires drilling and a separately purchased padlock
Best for: Budget-conscious anglers running mid-thrust Minn Kota or Riptide motors who want the MKA-21 design for less
Not ideal for: Buyers who prioritize long-term brand support and the tightest possible fit tolerances
- Compatible with:Ulterra, Terrova, Riptide ST/SP, PowerDrive, PowerDrive V2, PowerDrive Pontoon, DeckHand 40
- Replaces:Minn Kota MKA-21 / 1854021
- Material:Marine-grade composite
- Weight:1.78 kg (approx. 3.9 lbs)
- Color:Black
- Security:Locking pin hole accepts optional padlock
- Warranty:12 months, 30-day money-back
- Exclusions:Not for 72-inch-plus shafts or 112 lb thrust
Our verdict“The best price-to-capability ratio in this lineup — the MKA-21 experience for anglers who do not need the OEM name on the box.”
Quick Release Mounting Bracket for Minn Kota Trolling Motors (Replaces MKA-21 / 1854021)
Functionally, this bracket is a near-twin of the Sixcow — same MKA-21 replacement pattern, same composite construction, same 1.78 kg weight, same compatibility list. What separates it is the locking stainless steel U-pin design, which engages the motor more positively than a simple round pin and gives the padlock anchor a sturdier attachment point. For anglers who store their boat at a marina or launch where motor theft is a real risk, that U-pin plus a padlock is the most reassuring retention system among the composite options here.
Compared with the OEM MKA-21, this bracket offers the same saltwater-capable composite and the same low-profile deck clearance, but the warranty is the standard 1-year aftermarket term rather than factory backing. Compared with the Sixcow value pick, the choice comes down to which retention hardware you prefer — the U-pin here versus the equally capable but more conventional pin on the Sixcow — since price and compatibility are otherwise nearly identical.
The drawbacks mirror the rest of the composite group: drilling is required, the padlock is not included, and the 112 lb thrust and 72-inch shaft exclusions apply. This model is better suited to a standard-thrust Terrova or PowerDrive on a boat that sits unattended between trips than to a heavy offshore rig.
Pros:- Locking stainless steel U-pin provides sturdier retention than round-pin designs
- Corrosion- and UV-resistant composite suited to saltwater environments
- Low-profile design keeps the deck clear when the motor is off
- 1-year warranty with 30-day money-back guarantee
Cons:- Nearly identical in capability to cheaper clones — differences are marginal
- Requires drilling into the deck for installation
- Standard high-thrust and long-shaft exclusions apply
Best for: Boat owners who store or trailer where theft is a concern and want the strongest locking-pin setup on a composite bracket
Not ideal for: Anglers who want aluminum construction or need high-thrust motor support
- Compatible motors:Ulterra, Terrova, PowerDrive, PowerDrive V2, PowerDrive Pontoon, DeckHand 40
- Replaces:MKA-21 / 1854021
- Material:Corrosion- and UV-resistant composite
- Weight:1.78 kg
- Locking system:Stainless steel U-pin, padlock-compatible
- Mounting:Bolt-on, drilling required
- Warranty:1 year, 30-day money-back
Our verdict“A solid MKA-21 alternative whose U-pin locking system makes it the pick for security-minded owners.”
Quick Release Mounting Bracket for Minn Kota Trolling Motors (RTA-17 / 1854017)
Every other bracket in this lineup is black; this one is white, and that is not a trivial detail. On boats with white decks, gunwales, or lighter gelcoat, a black base plate stands out sharply, and this RTA-17 replacement is the only option here that blends in. If aesthetics on a pontoon or a lightly finished fiberglass boat matter to you, this is the pick by default — no other choice in this comparison offers a white finish.
Under the color, the hardware is familiar: low-profile composite construction, rust and UV resistance, and a locking handle with stainless steel pins that secures the motor and accepts additional locking measures. It matches the RTA-17 / 1854017 part number, which is the Riptide-family replacement bracket, and its compatibility list includes Riptide ST and SP alongside the standard PowerDrive and Terrova models. Compared with the Sixcow clone, it is slightly heavier at 1.8 kg and does not advertise a money-back return window, so the value pick still makes more sense for pure budget shopping.
The fit restrictions are the standard ones — no 112 lb thrust motors, no 72-inch-plus shafts — and drilling is required. This model is better suited to pontoon and bay-boat owners who care about a clean-looking deck than to anglers who just want the cheapest functional bracket.
Pros:- Only white-finish option in this lineup for matching light-colored decks
- Replaces the Riptide-family RTA-17 / 1854017 bracket with ST and SP compatibility
- Locking handle with stainless steel pins secures the motor firmly
- Composite construction resists rust, corrosion and UV exposure
Cons:- Slightly heavier than the comparable Sixcow bracket
- No advertised money-back return window
- Standard 112 lb thrust and 72-inch shaft exclusions apply
Best for: Owners of white-decked pontoon or fiberglass boats who want a bracket that matches the finish instead of standing out
Not ideal for: Budget-first buyers and anyone needing high-thrust motor support
- Compatible motors:Ulterra, Terrova, Riptide ST, Riptide SP, PowerDrive, PowerDrive V2, DeckHand 40
- Replaces:RTA-17 / 1854017
- Material:Composite
- Color:White
- Weight:1.8 kg
- Locking system:Locking handle with stainless steel pins
- Installation:Bolt-on, drilling required
- Exclusions:Not for 72-inch-plus shafts or 112 lb thrust
Our verdict“The finish-matching choice — functionally familiar hardware in the only white housing available here.”
How We Picked
Because all of these brackets do fundamentally the same job, I focused my comparison on the details that separate them in real-world use. Compatibility was the first filter: a bracket that does not fit your specific Minn Kota model is useless no matter how well it is built, so I checked each listing against the full motor list and flagged the high-thrust and long-shaft exclusions that trip up buyers.
Material choice came next. Composite brackets resist corrosion indefinitely but can flex under load, while anodized aluminum is stiffer and better suited to heavy saltwater duty. I also weighed what is included in the box — mounting hardware, locking pins, and padlock compatibility vary between listings, and buying hardware separately adds cost and hassle. Finally, I considered warranty length and manufacturer support, since OEM and established aftermarket brands back their products differently. I did not factor price or popularity into the ranking; this list is ordered by suitability for the widest range of buyers down to the most niche use cases.
| quick release trolling motor mount | Compatible motors | Material | Exclusions | Locking system |
|---|---|---|---|---|
| Minn Kota MKA-21 Quick Release | Ulterra, Terrova, PowerDrive, PowerDrive V2, PowerDrive Pontoon, DeckHand 40 | High-yield composite | Not for 112 lb thrust or 72-inch-plus shafts | — |
| Aluminum Trolling Motor Quick | — | Anodized marine-grade aluminum | — | Side screw with locking mechanism |
| Sixcow Quick Release Bracket C | — | Marine-grade composite | Not for 72-inch-plus shafts or 112 lb thrust | — |
| Quick Release Mounting Bracket | Ulterra, Terrova, PowerDrive, PowerDrive V2, PowerDrive Pontoon, DeckHand 40 | Corrosion- and UV-resistant composite | — | Stainless steel U-pin, padlock-compatible |
| Quick Release Mounting Bracket | Ulterra, Terrova, Riptide ST, Riptide SP, PowerDrive, PowerDrive V2, DeckHand 40 | Composite | Not for 72-inch-plus shafts or 112 lb thrust | Locking handle with stainless steel pins |
Factors to Consider When Choosing Quick Release Trolling Motor Mount
A quick release bracket is a simple product, but buying the wrong one wastes an afternoon of drilling and returns. These are the factors I weighed when ranking the five brackets above.Compatibility and Thrust Limits
The single most common mistake is buying a bracket that does not fit the motor. Every bracket in this lineup accepts the popular Minn Kota bow mounts — Terrova, Ulterra, PowerDrive, PowerDrive V2 — but the lists diverge at the edges: only the aluminum bracket claims Fortrex, only the Sixcow and RTA-17 replacements call out Riptide ST/SP explicitly. All five exclude 112 lb thrust motors and shafts 72 inches or longer. If you run a heavy offshore Riptide or a long-shaft Ulterra, you need the Minn Kota MKA-53 class of bracket instead, and nothing in this comparison will work.
Composite vs. Aluminum Construction
Composite brackets are the default for good reason: they cannot rust, they weigh less, and they hold up to UV and saltwater oxidation indefinitely. Their weakness is flex under heavy loads, which shows up as slop in the motor mounting over time on rough-water boats. Anodized aluminum is stiffer and handles abuse better, at the cost of extra weight and a reliance on the anodized coating staying intact. If your motor spends its life in salt spray and chop, aluminum makes sense; for casual freshwater use, composite is plenty.
Retention and Security
Quick release brackets are, by design, the easiest way for a thief to remove your motor — which is why the locking hardware matters. Look for a locking pin or handle that accepts a padlock, and budget for the padlock itself, because none of these brackets include one. The U-pin design on the B0CB84RW5K bracket is the most robust retention system among the composite options, while the aluminum bracket’s side-screw system adds a second layer of security beyond the pin alone.
Installation Requirements
Every bracket here requires drilling into your deck for the permanent base plate, so plan hole placement carefully before committing — a misplaced hole in a fiberglass deck is expensive to fix. Most installs are straightforward with a drill and the included hardware, but the aluminum bracket adds a step because a mating plate must also attach to the motor itself. If you are not comfortable drilling your boat, any marine shop can handle the install in under an hour.
Frequently Asked Questions
Will any of these brackets work with a 112 lb thrust trolling motor?
No. Every bracket in this comparison carries the same restriction: motors with 112 lb of thrust, or shafts 72 inches and longer, are excluded because the composite bases and locking pins are not rated for that level of load and leverage. Minn Kota directs owners of those heavier motors to the MKA-53 heavy-duty quick release bracket instead, which is built with a more robust base for exactly that duty. If you are running a large Ulterra or Riptide offshore, skip this entire category and go straight to the heavy-duty option rather than risking a bracket that flexes or fails under your motor.
Can I use one quick release bracket to share a motor between two boats?
Yes, and that is one of the main reasons these brackets exist. The system works in two parts: a base plate that bolts permanently to each deck, and the receiving plate that stays attached to the motor. If you install a base plate on both boats, you can move the motor between them in seconds without tools. The key detail is that both base plates must be the same model or a confirmed matching pattern — mixing brands or generations can create slight tolerance differences that introduce slop. Buying two of the identical bracket is the safest approach for a two-boat setup.
How does a composite bracket hold up in saltwater compared to aluminum?
Composite brackets actually have an advantage in pure corrosion resistance because there is no metal to oxidize — the polymer is immune to saltwater, and the stainless hardware included with most of them resists rust well. Where composite falls behind is stiffness: under a heavy motor pounding across chop, a composite base can flex more than an equivalent aluminum bracket, which some anglers feel as movement at the motor head. The anodized aluminum bracket in this lineup is the better choice for dedicated saltwater duty with larger motors, while composite is entirely adequate for inshore and brackish use with mid-thrust motors.
Do I need to drill holes in my boat deck to install one?
Yes, without exception in this lineup. Every bracket here uses a bolt-on base plate that requires drilling mounting holes into the deck, and that installation is permanent — the low-profile base stays on the boat even when the motor is removed. Take time to position the base so the deployed motor clears the bow and the stowed motor sits where you want it before drilling, because relocating the plate means filling and re-drilling holes. If you are hesitant about drilling into a fiberglass deck, a marine shop can handle the installation quickly and take the risk off your hands.
Can I lock the motor to the boat to prevent theft?
Partially. Most brackets in this comparison include a locking pin or handle with a hole that accepts a small padlock, which prevents someone from simply pulling the release and walking away with your motor. However, the padlock itself is never included, so you will need to buy one separately and choose a weather-resistant model sized to the pin hole. Keep in mind that a padlock deters opportunistic theft but not a determined thief with tools. For boats stored in unsecured locations, pairing a locked bracket with removing the motor between trips is the more reliable strategy.
Conclusion
After comparing all five, the right choice comes down to your motor, your water, and your priorities. If you want the safest all-around buy, the Minn Kota MKA-21 is the OEM benchmark with the most predictable fit — it is the bracket I would put on my own boat for a standard-thrust Terrova or PowerDrive. If you fish saltwater hard or run a Fortrex, the anodized aluminum bracket is the clear pick, trading weight for stiffness and the broadest model coverage in the lineup.
Budget-focused anglers should look at the Sixcow MKA-21 replacement, which delivers the same proven design and Riptide compatibility for less, backed by a 12-month warranty. Owners worried about theft — marina storage, busy launches — get the most from the U-pin locking design on the MKA-21-style bracket with the stainless U-pin. And anyone with a white-decked pontoon or fiberglass boat who wants the hardware to disappear into the finish has exactly one option here: the white RTA-17 replacement.
Whichever you choose, verify two things before ordering: that your motor is on the bracket’s compatibility list, and that you are not running 112 lb thrust or a 72-inch-plus shaft. Get those right, and any bracket in this group will give you years of tool-free motor removal.
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