Vertex Replica Piston Kit
1012-9564 (MFG #: 22915B)
$357.52
Sale price
$357.52
Regular price
$397.23
Sale
-9%
Skip to product information
Vertex Replica Piston Kit for Honda CR85R Dirt Bike
Vertex Replica Piston Kit for Honda CR85R Dirt Bike
$357.52
Sale price
$357.52
Regular price
$397.23
Sale
-9%
SKU:1012-9564
My Garage
Select a ride to guarantee fitment.
My Garage
Add your vehicles to your garage. Several features will then be available to facilitate your searches.
- Store vehicles in your garage
- Easily find guaranteed fit products and accessories
- Get product recommendations
Available Online
Free shipping on orders over $99
Standard Fulfillment: -
Expedited Fulfillment: -
Lowest Price Guaranteed
Fast Shipping
Easy Returns
Description
FEATURES
- All piston skirts are coated with a hi-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
- Cast Replica piston kits are gravity cast aluminum alloy (not forged) with 18% silicone content, which produces an extremely light but very strong piston
- Forged Replica pistons are forged from 2618 aluminum for superior strength and durability
- Forged High Compression pistons improve power and torque across entire rpm range
- Forged Big Bore pistons increase engine's displacement, torque, and peak horsepower
- Forged Replica pistons are forged OE replacements
- All pistons are heat treated with a T-5 hardening and tempering cycle
- Replica pistons and all rings are OEM replacements
- Kits include piston, rings, wrist pin and circlips
- Two stroke replacement rings are sold individually (Example if your piston has two rings you will want to order two rings)
- Four-stroke piston rings sold as a set
Technical Specifications
- MFG. Part Number 22915B
Vehicle Information
Honda CR85R Dirt Bike (2003-2008)
The Honda CR85R, a renowned two-stroke motocross bike, was produced from 2003 to 2007, though some 2008 models are listed, likely representing late sales of 2007 stock. It was powered by a liquid-cooled, single-cylinder, 84.7cc two-stroke engine, consistently delivering around 26 horsepower. Two main trims were available: the standard CR85R and the CR85R Expert (also known as CR85RB or CR85RII), which featured larger wheels, a longer swingarm, and higher seat for taller riders. The 2003 model year marked a significant evolution from its predecessor, the CR80, with an increased engine displacement, a stronger frame, and improved transmission. Further substantial refinements were introduced in 2005, including a new cylinder, piston, exhaust system, carburetor, and ignition for enhanced torque, acceleration, and durability. Subsequent years, like 2006 and 2007, saw mostly minor updates, such as sticker changes. Q: How do I ensure parts fit my specific CR85R?
A: Please use our year and edition selector to find parts guaranteed to fit your exact model.
Maintenance
| Component | Interval | Details |
| Engine Oil Change | 5 to 10 hours | More frequently for aggressive or race-level riding (5 h), less for recreational riding (10 h). |
| Oil Filter (Transmission) | With every oil change | The CR85R uses a transmission oil filter, changed with the engine oil. |
| Air Filter Service | 3 to 15 hours | Interval varies by model year and riding conditions (more frequently in dusty or muddy conditions). |
| Spark Plug | Regular inspection | Check and replace as needed to prevent fouling, especially for a competition bike. |
| Coolant | Check before each ride, annual replacement | Check level and condition frequently. Replace annually or more often under aggressive riding. |
| Top-End Inspection (Piston and Cylinder) | 15 to 50 hours | Interval varies significantly by model year and riding style (shorter for competition). |
| Bottom-End Inspection (Crankshaft and Bearings) | 30 to 100 hours | Interval varies significantly by model year and riding style (shorter for competition). |
Maintenance intervals can vary significantly by model year and riding style (recreational or competition). It is essential to consult your vehicle's specific owner's manual for the most accurate information.