JE Pistons
Fitment:
-18-19 Honda CRF250R
-2019 Honda CRF250RX
Bore Size: 79mm (Stock Bore)
Replacement Components are available, please see below.
Includes:
-JE Forged Piston
-JE Wrist Pin
-1 Set of JE Piston Pin Clips
Piston uses OEM Honda Piston Ring Pack (Not Included, Must Purchase Separately, See Options to Purchase Piston Ring Pack).
Pro Series Pistons Feature an Internally and Externally Braced Windowed Boxed Forging for improved strength and allowing lightweight piston construction. Also features Ultra Flat Ring Grooves for improved ring stability and ring seal. DLC Coated Wrist Pin Included.
Piston Specs:
79mm 13.9:1 Pistons (355531):
-Bore Diameter: 79.00mm
-Piston Head Type: Dome
-Piston Dome Volume: -2.6cc's
-Cylinder Head: CRF250 18
-Compression Height: 0.745"
-Piston Pin Outside Diameter: 0.630"
-Piston Pin Length: 1.500"
-Piston Pin Material: 9310 Steel DLC Coated
-Ringset Included: No (Must use OEM Honda Piston Rings)
-Top Compression Ring Thickness: 0.032"
-Oil Ring Thickness: 0.0585"
-Piston Material: 2618 Aluminum Forged
-Forging Type: FSR
-Pin Wall Thickness: 0.140"
79mm 14.4:1 Pistons (355532):
-Bore Diameter: 79.00mm
-Piston Head Type: Dome
-Piston Dome Volume: -2.6cc's
-Cylinder Head: CRF250 18
-Compression Height: 0.745"
-Piston Pin Outside Diameter: 0.630"
-Piston Pin Length: 1.500"
-Piston Pin Material: 9310 Steel DLC Coated
-Ringset Included: No (Must Use OEM Honda Piston Rings)
-Top Compression Ring Thickness: 0.032"
-Oil Ring Thickness: 0.0585"
-Piston Material: 2618 Aluminum Forged
-Forging Type: FSR
-Pin Wall Thickness: 0.140"
110+ Octane Race Fuel is Required for the Above Pistons.
Replacement Components:
Replacement Ring Pack:
-OEM Honda Piston Ring Pack (Part #: 13011-K95-A20) (Fits All Pistons)
Replacement Wrist Pin:
-630-1500-14-9DC (Fits All Pistons)
Replacement Wrist Pin Clips:
-630-050-MW (Fits All Pistons)
