The Buckshot Racing #77 Stainless 1/2-Inch Trailering & Trim Limiter Bolt Kit provides a simple and effective solution for supporting your Mercury outboard during transport while also limiting excessive negative trim during operation.
Designed as a direct replacement for Mercury-style trim support bolts, this kit installs through the transom bracket and trim system to help prevent the engine from settling lower during trailering. By supporting the outboard in a partially raised position, the bolt helps reduce stress on hydraulic trim components while minimizing engine movement over rough roads.
For many performance boaters, anglers, and recreational owners, this style of support bolt has been a proven alternative to relying solely on the trim system to hold engine weight during transport.
Helps Protect Trim & Tilt Components
Hydraulic trim systems are designed to position the engine while operating, but extended trailering can place continuous loads on seals, cylinders, pumps, and internal hydraulic components.
A properly installed support bolt helps transfer some of this load away from the trim system while reducing engine bounce during transportation. This can help minimize wear on trim components and reduce unnecessary movement when towing over uneven roads.
The bolt can also be used as a trim-limiting device on certain applications, helping restrict excessive negative trim settings that may not be desirable for specific boat setups.
Durable Stainless Steel Construction
The kit includes a heavy-duty 1/2-inch stainless steel bolt, stainless flat washer, stainless lock washer, and locking nut. Stainless construction provides excellent corrosion resistance in both freshwater and saltwater environments while maintaining strength and durability over years of use.
Unlike mild-steel hardware that can rust and deteriorate, stainless components help maintain a clean appearance while providing dependable long-term service.
Broad Mercury Outboard Applications
This style of support bolt is commonly used on Mercury Marine, Mercury Racing, and Mariner outboards equipped with compatible transom bracket assemblies.
Applications frequently include Mercury 2.0L, 2.4L, 2.5L, 3.0L, and 3.2L outboards, including XR2, XR4, XR6, XRi EFI, Pro Max, Optimax, Pro XS, 300X, 300XS, 250R, 300R, 400R, 450R, 500R, and numerous Mercury Racing performance engines.
Because bracket designs can vary, fitment should always be verified before installation. This kit cross-references Mercury and aftermarket part numbers 17-3605, 17-80095M, and 620-43160-01.
What's Included
Each kit includes one (1) stainless steel support bolt, one (1) stainless flat washer, one (1) stainless lock washer, and one (1) stainless nut.
Final Thoughts from Buckshot Racing #77
The Buckshot Racing #77 Stainless 1/2-Inch Trailering & Trim Limiter Bolt Kit is a simple upgrade that helps support your Mercury outboard during transport while reducing unnecessary strain on trim and tilt components.
Built from corrosion-resistant stainless steel and supplied as a complete hardware package, it provides an easy and dependable solution for performance boaters, anglers, and Mercury enthusiasts looking to protect their investment.