JE Pistons
Fitment:
-99-14 Honda TRX400EX
-96-04 Honda XR400R
Bore Size: 84mm (+4mm Big Bore). Big Bore Sleeve or Aftermarket Big Bore Cylinder required.
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
Piston Specs:
89mm 10.8:1 Pistons (247612) (For Pump Gas):
-Bore Diameter: 89.00mm
-Piston Head Type: Dome
-Cylinder Head: EX/XR 400 R
-Compression Height: 1.035"
-Piston Pin Outside Diameter: 0.787"
-Piston Pin Length: 2.250"
-Piston Pin Material: 9310 Steel
-Ringset Included: Yes
-Top Compression Ring Thickness: 0.040"
-Second Compression Ring Thickness: 0.048"
-Oil Ring Thickness: 0.111"
-Piston Material: 2618 Aluminum Forged
-Forging Type: Round
-Piston Avg Weight: 273 g
-Pin Wall Thickness: 0.140"
89mm 12:1 Pistons (208552) (110+ Octane Race Gas is Recommended):
-Bore Diameter: 89.00mm
-Piston Head Type: Dome
-Cylinder Head: EX/XR 400 R
-Compression Height: 1.035"
-Piston Pin Outside Diameter: 0.787"
-Piston Pin Length: 2.250"
-Piston Pin Material: 5115 Steel
-Ringset Included: Yes
-Top Compression Ring Thickness: 0.040"
-Second Compression Ring Thickness: 0.048"
-Oil Ring Thickness: 0.111"
-Piston Material: 2618 Aluminum Forged
-Forging Type: Round
-Piston Avg Weight: 268 g
-Pin Wall Thickness: 0.180"
Replacement Components:
Replacement Ring Pack:
-XC8900 (Fits All Pistons)
Replacement Wrist Pin:
-787-2250-18-51C (208552)
-787-2250-14-93C (247612)
Replacement Wrist Pin Clips:
-787-050-MW (Fits All Pistons)
