Best Kayak Transom Mount Trolling Motors for Flat Stern Boats
Answering the common buyer question: which kayak transom mount trolling motor will install securely on a flat stern and deliver steady performance in both freshwater and saltwater? This guide highlights five practical mounts that fit most clamp-on electric trolling motors up to 3HP (70 lbs thrust). Each pick is explained for who it’s best for, with clear pros, limits, and installation notes to help you choose confidently.
| Product | ||
|---|---|---|
| Apaspoil Universal Transom Trolling Motor Mount | 3.75″ x 3.75″ / 4.75″ x 4.75″ (two sizes, plus combinations) | Flat stern kayaks needing versatile bolt choices |
| besttruck Universal Transom Trolling Motor Mount | 3.75″ x 4.75″ pattern | Flat-stern boats with clamp-on motors up to 3HP |
| JURPLIX Kayak Trolling Motor Transom Mount | 3.75″ x 4.75″ bolt pattern | Wide compatibility and easy installation |
| Camoo Transom Trolling Motor Mount | 3.75″ x 4.75″ bolt pattern | Most clamp-on electric motors up to 3HP |
| usvehj Transom Trolling Motor Mount | 3.75″ x 4.75″ bolt pattern | Flat stern kayaks seeking sturdy all-round support |
Apaspoil Universal Transom Trolling Motor Mount

Best for kayaks requiring flexibility in bolt sizing. This mount uses two screw-hole sizes (3.75″ and 4.75″) and supports combinations like 3.75″ x 3.75″, 4.75″ x 4.75″, or 3.75″ x 4.75″. It is crafted from 5mm marine-grade steel with a gloss black powder coating and includes UV-resistant nylon panels. A reinforced anti-slip lip helps secure the motor in choppy waters. It is universal for electric trolling motors only, not for outboards. Its strong load-bearing capacity suits motors up to 3HP or 70 pounds thrust. Best for durable, heavy-use setups on flat stern kayaks.
Best use scenario: anglers or recreational paddlers who want a robust mount that adapts to multiple bolt patterns without modifying the boat. Caution: verify the kayak’s stern surface is flat enough to accommodate the dual-pattern mounting without interference with other fittings.
besttruck Universal Transom Trolling Motor Mount

Best for quick installs on boats with flat sterns and a need for a straightforward clamp-on setup. This mount is designed for electric trolling motors up to 3HP and uses stainless hardware with black Nylon panels for corrosion resistance and durability. It emphasizes a universal fit for boats that have a flat stern surface large enough for a power pole. Limitations include its focus on electric motors and not accommodating gasoline engines. The design prioritizes easy alignment and a sturdy lock to prevent drift in moderate waves.
JURPLIX Kayak Trolling Motor Transom Mount

Best for wide compatibility and easy, tool-friendly installation on flat-stern kayaks. It supports up to 3HP and uses the standard 3.75″ x 4.75″ bolt pattern. The mount includes pre-drilled holes, makes alignment quick, and uses reinforced anti-slip locking lips along with replaceable nylon plates to reduce vibration. Best for boaters who want a balance of fast setup and reliable stability in rough water. Caution: nylon plates wear over time and may require periodic replacement for best vibration reduction.
Camoo Transom Trolling Motor Mount

Best for a marine-grade aluminum build with a gloss powder-coated finish. It uses the standard bolt pattern (3.75″ x 4.75″) and is compatible with most clamp-on electric motors up to 3HP. The locking lip and nylon plates help secure the motor and dampen vibration. This lightweight, corrosion-resistant mount is ideal for saltwater and freshwater kayaks. Choose this if you prioritize corrosion resistance and a high-strength aluminum profile. Limitation: aluminum construction, while strong, can be susceptible to bending if misaligned under heavy thrust in rocky conditions.
usvehj Transom Trolling Motor Mount

Best for a sturdy 6mm aluminum body with a gloss black finish. It adheres to the 3.75″ x 4.75″ bolt pattern and supports up to 3HP motors. The mount features a strong anti-slip locking lip and replaceable nylon plates for reduced vibration. This is a dependable option for kayak setups that demand solid long-term performance in varied water conditions. Caution: ensure compatibility with your specific motor’s shaft diameter and mounting hardware for optimal fit.
Buying Guide: Key Considerations for Kayak Transom Mounts
- Bolt pattern compatibility: Most mounts use a 3.75″ x 4.75″ standard; confirm your motor’s bolt pattern matches before purchasing.
- Motor power and thrust: Look for mounts rated for up to 3HP or 70 lbs thrust to cover common electric trolling motors.
- Material and corrosion resistance: Marine-grade aluminum or stainless hardware with corrosion-resistant coatings perform best in saltwater environments.
- Locking mechanism: A reinforced anti-slip lip helps keep the motor in place during choppy conditions; replaceable nylon plates can reduce vibration and wear.
- Installation simplicity: Pre-drilled holes and straightforward alignment save time; verify the stern surface is flat and free of protrusions that could interfere with mounting.
- Weight and durability: Heavier full-cast aluminum or stainless steel mounts tend to be more durable but may be more challenging to install on very light kayaks.
Frequently Asked Questions
- What bolt pattern do most kayak mounts use?
Most use a 3.75″ x 4.75″ bolt pattern for flat stern kayaks, enabling broad motor compatibility. - Can I use these mounts with gasoline outboard motors?
No. These mounts are designed for electric trolling motors only. - Is a thicker mount always better?
Thicker materials like 6mm aluminum offer greater durability and resistance to bending, but weight and boat compatibility must be considered. - What should I do if the motor shakes in use?
Check the anti-slip lip, nylon plates condition, and mounting alignment. Replace worn plates and ensure the bolts are tightened to the recommended torque. - How do I choose between aluminum and stainless steel mounts?
Aluminum is lighter and corrosion-resistant; stainless steel offers superior strength but can be heavier and pricier. Consider water type (salt vs. freshwater) and planned usage. - Are these mounts universal for all kayaks?
They are designed for flat-stern kayaks and must meet bolt pattern and surface requirements for reliable installation.