Wiseco Garage Buddy Complete Engine Rebuild Kit - Honda TRX400EX / TRX400X (2005-2014) - 85.00mm Bore (Standard)

Wiseco Garage Buddy Complete Engine Rebuild Kit - Honda TRX400EX / TRX400X

The Wiseco Garage Buddy is the ultimate complete engine rebuild solution for your Honda TRX400EX or TRX400X sport ATV. This comprehensive kit includes everything you need for a professional-grade full engine rebuild - from top to bottom end. No more sourcing individual parts!

Why Garage Buddy?

The Garage Buddy kit takes the guesswork out of engine rebuilding. Every component is matched and ready to install, ensuring proper fit and optimal performance. Whether you're rebuilding after a failure or freshening up a high-hour engine, this kit has everything you need in one box.

Kit Includes

• Crankshaft Assembly - Complete crank and rod assembly, designed and inspected to assure durability
• Wiseco Forged Piston Kit (#4606M0850) - Premium 2618 aluminum alloy, standard bore
• Top End Gasket Kit (#W5514)
• Bottom End Gasket Kit (#WB1171)
• Main Bearing (#B5047)
• Cam Chain (#CC004)
• Wiseco Hour Meter with Mount (#W8063/W8062) - Track your engine hours
• Maxima Assembly Lube - Premium assembly lubricant

Key Features

• Complete top and bottom end components for a full engine rebuild
• Premium forged 2618 aluminum alloy piston
• Stock compression ratio (10.0:1) for reliable performance
• Standard bore (85.00mm) - direct OEM replacement
• Includes hour meter to track engine hours
• Includes Maxima assembly lube for proper break-in
• All components matched for proper fit

Piston Specifications

• Bore Size: 85.00 mm (Standard)
• Piston Diameter: 84.95 mm
• Compression Ratio: 10.0:1 (Stock)
• Material: 2618 Aluminum Alloy
• Skirt Coating: Non-Coated
• Style: Forged Series

Engine Specifications

• Displacement: 400cc
• Engine Type: 4-Stroke
• Kit Weight: 16.4 lbs

Fitment

Honda ATV:

• TRX400EX Sportrax: 2005-2008
• TRX400X: 2009, 2012-2014

Standard vs Oversize

This is the STANDARD BORE (85.00mm) kit. If your cylinder has been bored or is worn, check out our oversize option (86.00mm / +1.00mm).

Why Wiseco?

Wiseco has been the leader in forged pistons for over 80 years. The Garage Buddy program brings their expertise to complete engine rebuild kits, ensuring every component meets their exacting standards. The 2618 aluminum alloy provides excellent strength and durability for the demanding TRX400 application.