Wiseco Piston Kit Honda TRX400EX 1999-2008 85.5mm 11:1 4628M08550
Part Number: 09102831WISECO
- SKU:
- 09102831
- MPN:
- 4628M08550
- Condition:
- New
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
Description
If you're running a Honda TRX400EX and want measurable gains in throttle response and engine reliability, a quality piston kit is non-negotiable. Wiseco pistons are engineered to tighter tolerances than OEM alternatives, delivering better ring seal, reduced blow-by, and consistent power delivery across the RPM band. Whether you're prepping for competition or maximizing your machine's longevity, this kit is the foundation of a properly rebuilt top-end.
The 4628M08550 is precision-engineered for the TRX400EX platform with an 85.5mm bore and 11:1 compression ratio, making it ideal for riders looking to enhance stock performance without major engine modifications. Installation requires proper honing of the cylinder and a new gasket kit (sold separately), but the payoff is a significantly more responsive and durable power plant.
- Fits: Honda TRX400EX (1999–2008)
- Bore diameter: 85.5mm
- Compression ratio: 11:1
- Material: High-strength forged aluminum
- Design: Lightweight, reduced mass
- Installation: Bolt-on (cylinder honing required)
- Includes: Piston kit only
- Excludes: Gasket kit, rings (order separately)
- Application: Recreational and competitive riding
- MPN: 4628M08550
Specs
BORE - OVERSIZE: |
+0,50 MM |
COMPRESSION RATIO IMPERIAL: |
11.0:1 |
DISPLACEMENT: |
397 CC |
RIDING STYLE: |
OFF-ROAD |
STROKE LENGTH METRIC: |
70.00 MM |
BORE - OVERSIZE METRIC: |
+0.50 MM |
BORE SIZE METRIC: |
85.50 MM |
ENGINE TYPE: |
4-STROKE |
PISTON MATERIAL: |
ALUMINUM ALLOY |
PISTON MATERIAL: |
FORGED |
PRODUCT NAME: |
PISTON |
RIDING STYLE: |
ATV |
UNITS: |
EACH |
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