Wiseco 88mm Big Bore 11:1 Top End Kit – Honda TRX400EX / TRX400X / XR400R (1996-2014)
- Ships next business day
- 30-day hassle-free returns
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✓ Fits:
- 1996-2014 Honda TRX400EX
- 1996-2014 Honda TRX400X
- 1996-2014 Honda XR400R
✓ Features:
- Forged 88.00 mm piston (+3.00 mm, 11:1 compression)
- High-performance piston ring set
- Wrist pin & circlips
- Complete top-end gasket kit (head, base, valve cover, and seals)
- Big bore upgrade – 88.00 mm piston (+3.00 mm over stock)
- 11:1 high-compression ratio for stronger low-end and midrange power
- Forged from aerospace-grade aluminum alloy for maximum durability
✓ What's Included:
- Piston, rings, wrist pin, and circlips
Ships fast from DuneGoonShop!
📦 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
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.
