JE Pistons
Fitment:
-04-09 Honda CRF250R
Bore Size: 80mm (+2mm Big Bore). Requires Boring and Replating Cylinder, This Service is Available Here.
Replacement Components are available, please see below.
Includes:
-JE Forged Piston
-JE Piston Ring Pack
-JE Wrist Pin
-1 Set of JE Piston Pin Clips
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. Pistons also feature Moly Skirt Coating.
Piston Specs:
80mm 13.5:1 Pistons (221772):
-Bore Diameter: 80.00mm
-Piston Head Type: Dome
-Cylinder Head: CRF250 04-08
-Compression Height: 0.748"
-Piston Pin Outside Diameter: 0.630"
-Piston Pin Length: 1.650"
-Piston Pin Material: 9310 Steel
-Ringset Included: Yes
-Top Compression Ring Thickness: 0.040"
-Oil Ring Thickness: 0.0795"
-Piston Material: 2618 Aluminum Forged
-Forging Type: FSR
-Piston Avg Weight: 164 g
-Pin Wall Thickness: 0.120"
110+ Octane Race Fuel minimum required for this piston.
Replacement Components:
Replacement Ring Pack:
-JC3401-3150
Replacement Wrist Pin:
-630-1650-12-93C
Replacement Wrist Pin Clips:
-630-050-MW
