Wiseco Forged Series Piston Kit with Gaskets - Honda TRX400EX/TRX400X/XR400R (1996-2014) - 87.00mm Bore (+2.00mm Oversize) - 10.0:1 Compression - 4-Stroke
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Wiseco Forged Series Piston Kit with Gaskets - Honda 400 Platform - +2.00mm Oversize 10.0:1
Premium Wiseco Forged Series piston kit for Honda TRX400EX, TRX400X, and XR400R. +2.00mm OVERSIZE (87.00mm) with 10.0:1 STOCK compression!
⚠️ Oversize Piston - Cylinder Boring Required
This piston is +2.00mm oversize. Cylinder boring to 87.00mm is required for proper fit.
Kit Includes
- Forged Series Piston
- Ring Set
- Wrist Pin
- Wrist Pin Retainer Set
- Complete Gasket Kit
Piston Specifications
- Bore Size: 87.00 mm (+2.00mm Oversize)
- Piston Diameter: 86.95 mm
- Stroke Length: 70.00 mm
- Compression Ratio: 10.0:1 (Stock)
- Material: 2618 Aluminum Alloy
- Skirt Coating: Non-Coated
Engine Specifications
- Displacement: 397cc
- Engine Type: 4-Stroke
- Weight: 1.9 lbs
Fitment
- Honda TRX400X: 2009, 2012-2014
- Honda TRX400EX Sportrax: 2000-2008
- Honda TRX400EX FourTrax: 1999
- Honda XR400R: 1996-2004
📦 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.
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