SKU: 3189XG
Wiseco 81mm Ring Set 1.0 x 1.0 x 2mm – 1 Cylinder Polaris Sportsman 400 2001-2005
Wiseco 81mm ring sets deliver precise fitment for Polaris Sportsman 400 models from 2001 to 2005. Designed for 4-stroke pistons these rings ensure strong compression sealing and effective oil control. Tested for high-performance demands in powersports applications.
Key Features
- Exact Sizing: 81mm bore with 1.0mm top 1.0mm second and 2mm oil rings for one cylinder matches Wiseco piston specs
- Compression Sealing: Tight ring-to-cylinder contact reduces blow-by for consistent power output
- Oil Control: 2mm oil ring design scrapes excess oil to keep combustion chamber clean and reduce drag
- Race-Tested Design: Developed through dyno and track testing for durability under high RPM
- Material Quality: High-strength steel construction resists wear in demanding 4-stroke engines
Product Notes
- Pair with Wiseco pistons for best results verify bore size before install
- Inspect rings for end gap during assembly adjust as needed per service manual
- Ships in protective packaging handles rough transit
Installation Notes
- Professional installation recommended.
- Clean cylinder bore thoroughly before ring install use ring compressor tool
- Compatible with stock Wiseco pistons no special hardware required
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2001-2005 | Polaris | Sportsman 400 | All |
| 2001-2003 | Polaris | Scrambler 400 | All |
| 2000-2002 | Polaris | Trail Boss 400 | All |
Why Choose Wiseco?
- Proven leader in powersports piston components for decades
- Rings built to exact tolerances for long-term reliability
- Engineered and tested for real-world racing conditions
Frequently Asked Questions
- Q: Does this ring set fit 2004 Polaris Sportsman 400 EFI?
A: Yes it matches the 81mm bore on 2001-2005 Sportsman 400 including EFI models confirm your piston bore size - Q: What ring material is used?
A: High-strength cast iron top and second rings with steel oil ring for wear resistance and heat tolerance - Q: Is a warranty included?
A: Wiseco offers manufacturer defect coverage contact seller for details proper install required
Shipping & Handling
- Method: USPS First Class or UPS Ground
- Availability: In stock – ships same or next business day
- Packaging: Compact box 4 x 3 x 1 inches
- Weight: 0.2 lbs
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