Top End Piston Kit – Honda CR80R 1992–2002 (46.96mm +0.02 Nikasil Bore)
Description
Rebuild your Honda CR80R's top end with a complete kit built for durability and performance. This 46.96mm standard-bore piston kit pairs premium coatings and casting techniques to help your engine run cooler, resist seizure, and hold up to hard motocross use.
Kit Includes
- Piston
- Rings
- Wrist pin
- Clips
- Top end bearing
- Gasket kit
Key Features
- MOS2 (Teflon/Molybdenum) coated skirts — rolled-on application bonds 10x stronger than spray-on coatings, improving heat transfer and reducing friction to help prevent cold seizures
- Machined smooth heads — reflect combustion heat and reduce carbon buildup; testing has shown up to a 6% gain in horsepower and fuel economy
- Anodized domes — increase heat resistance and durability; anodized domes test 75% stronger than non-anodized pistons
- Hypereutectic casting process — higher silicon content for reduced expansion and added wear resistance, with better tolerance for high cylinder temperatures
Fitment
| Make | Model | Years |
|---|---|---|
| Honda | CR80R | 1992–2002 |
Compatibility
Fetching compatibility details...
| Year | Make | Model |
|---|---|---|
Frequently Asked Questions
01 Which bikes does this fit?
Kawasaki KLX400 (2003), Suzuki DR250 (1993–1995), DR350 (1990–1993), DR-Z400E (2000–2007), RM250 (1982–1986), and SG350 Goose (1991–1992). Fitment is based on countershaft/hub fit — verify your exact measurements before ordering, since it can vary within the same model year.
02 What chain size does this use?
520 pitch.
03 Are mounting bolts or a lock washer included?
No — this is the sprocket only. Nuts, bolts, and locks are sold separately.
04 What's it made of?
SCM420 chromoly steel alloy, heat treated and finished to meet or exceed OEM standards.
05 Do I need to replace the rear sprocket and chain at the same time?
Not required, but a worn chain or rear sprocket paired with a new front sprocket wears out faster — if the rest of your drivetrain is old, it's worth checking before you install just this piece.