Wiseco Garage Buddy Complete Engine Rebuild Kit - Honda TRX400EX / TRX400X (2005-2014) - 88.00mm Bore (+3.00mm Big Bore) - DISCONTINUED
Wiseco Garage Buddy Complete Engine Rebuild Kit - Honda TRX400EX / TRX400X - Big Bore
⚠️ DISCONTINUED - LIMITED AVAILABILITY - NON-RETURNABLE - CALL FOR BEST PRICE!
The Wiseco Garage Buddy is the ultimate complete engine rebuild solution for your Honda TRX400EX or TRX400X sport ATV. This BIG BORE kit increases displacement with an 88mm piston (+3.00mm over stock) while including everything you need for a professional-grade full engine rebuild.
⚠️ Big Bore Kit: +3.00mm (88.00mm bore)
This kit includes a +3.00mm oversize piston (88.00mm bore). Your cylinder must be bored to 88.00mm to use this kit. Increases displacement for more power!
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 building a big bore stroker, 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 (#4606M08800) - Premium 2618 aluminum alloy, +3.00mm big bore
- Top End Gasket Kit (#W5942) - Big bore specific gaskets
- 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) maintained for reliability
- +3.00mm big bore (88.00mm) for increased displacement
- 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: 88.00 mm (+3.00mm Big Bore)
- Piston Diameter: 87.95 mm
- Compression Ratio: 10.0:1 (Stock)
- Material: 2618 Aluminum Alloy
- Skirt Coating: Non-Coated
- Style: Forged Series
Engine Specifications
- Displacement: 400cc+ (increased with big bore)
- Engine Type: 4-Stroke
- Kit Weight: 16.4 lbs
Fitment
Honda ATV:
- TRX400EX Sportrax: 2005-2008
- TRX400X: 2009, 2012-2014
- TRX400EX: 2014
Important Notice
This product is DISCONTINUED and NON-RETURNABLE. Limited quantities available. Once sold out, this kit will not be restocked. Get it while you can!
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.
📦 Shipping Information
In-Stock Items:
- Most parts ship next business day
- Modquad parts: Monday–Thursday dispatch
Made-to-Order Items:
- Custom swingarms & A-arms: 2–4 weeks
- EVP exhaust systems: 2–4 weeks
- Sneakers: 1–2 weeks
Stock Guarantee: Items marked "In Stock" ship immediately. Made-to-order items are built fresh for you.
Questions? Contact us—we respond within 24 hours.
