2010-2013 Honda CRF250R 13.5:1 76.8mm std bore x 53.8mm stroke (249cc) piston kit
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2010-2013 Honda CRF250R 13.5:1 76.8mm std bore x 53.8mm stroke (249cc) piston kit
|
Make |
Honda |
|
Engine Size |
250cc |
|
Model |
CRF250R |
|
Year |
2010-2013 |
|
Bore (mm) |
76.8mm |
|
Comp Ratio |
13.5:1 |
|
Piston Part Number |
M2070C |
|
Gasket Part Number |
C3288 |
|
Conrod Part Number |
PSR8822A |
|
Pin Part Number |
W630-1650-13CP1C |
|
Locks Part Number |
630x050 SWL |
|
Rings |
CP7680C |
|
Shelf (RPO) or Made to Order (MTO) |
MTO |
Proudly made in the USA by CP Carrillo Pistons!
- Fully CNC machined
- Balanced to +/- 1 gram
- Double forced pin oilers
- Forged from high strength 2618 alloy
- Designed for maximum performance, horsepower and reliability
- Complete kit includes two pistons, ring sets, wrist pins and clips
- Follow ring end gap and piston to cylinder clearances as per the supplied instructions
| Product Name | 2010-2013 Honda CRF250R 13.5:1 76.8mm std bore x 53.8mm stroke (249cc) piston kit |
|---|---|
| Brands | CP Carrillo |
Delivery & Freight
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What information do I need to match these pistons to my engine?
You need the engine code, bore size, stroke, rod length, pin diameter and target compression ratio. These determine the correct piston compression height and crown design.
How should ring gaps be set for these pistons?
Ring gaps must be set by your engine builder based on fuel type, boost level and the intended rpm range. Forced-induction engines usually require larger gaps.
Are forged pistons suitable for street engines?
Yes. Forged pistons handle detonation and high cylinder pressure better than cast units. Your builder should set the piston-to-bore clearance to suit your application.
What are the recommended clearances for the M2070C piston kit in a Honda CRF250R?
For the M2070C piston kit, it is crucial to follow the manufacturer's specifications for piston-to-cylinder clearance. Typically, a clearance of 0.0015" to 0.0025" is recommended, but always verify with your specific engine build requirements. Additionally, ensure that the ring end gaps are set according to the supplied instructions for optimal performance.
What type of fuel is recommended for the M2070C piston kit's compression ratio?
With a compression ratio of 13.5:1, the M2070C piston kit is best suited for high-octane fuel, typically 98 RON or higher. This helps prevent detonation and ensures reliable performance, especially under high load conditions.
Can I use the M2070C piston kit with stock conrods?
While the M2070C piston kit can technically be used with stock conrods, it is advisable to upgrade to performance conrods for enhanced strength and reliability, especially if you plan to increase power output or RPM. Ensure that the conrod and piston pin compatibility is maintained.
What machining processes are necessary before installing the M2070C piston kit?
Before installing the M2070C piston kit, it is essential to ensure that the cylinder bore is properly honed to match the piston size and that the crankshaft is balanced with the full rotating assembly. Additionally, check for any necessary line boring of main caps if applicable.
What is included in the M2070C piston kit?
The M2070C piston kit includes two forged pistons, a complete set of rings, wrist pins, and clips. This comprehensive kit is designed for a straightforward installation, but always ensure to follow the specific installation guidelines provided.
