Piston Set, 2618, Dome, 3.425 Bore, 1.035 CD, 0.787 Pin, Set of 1.

Part Number 133889 (132899119)

UPC: 193564005083

Package contents: 1 Each per Box

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Description

As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of pistons for Honda XR 400/ TRX 400EX/ TRX 400X Engines JE Pistons are engineered, forged and machined 100% in the USA. Equipped with the following custom level features

Fitment

This part fits the following vehicles.

Honda

1996-2004 XR400R

Features & benefits

Forged in the USA using 2618 aluminum, yielding high tensile strength needed for high-demand performance applications
Race-inspired two-ring design promotes quick revving and throttle response for noticeable power
Designed specifically for Honda XR 400/ TRX 400EX/ TRX 400X Engines to provide optimized performance durability
Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss with reduced skirt width and saves additional weight with a shorter wrist pin
Includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings
Made 100% in the USA
Accumulator Groove: A specialty groove between the top and second ring provides added volume for blow-by gases. This helps reduce pressure between the rings, improving top ring seal and minimizing ring flutter at high cylinder pressures.
Pin Fit: The pin bore is precision honed to attain an exact pin clearance. Clearances typically range from .0003 to .0010 between the wrist pin and pin bore.

Specifications

2nd Groove Width	0.048 in
3D Undercrown Milling	No
Accumulator Groove	Yes
Anodize Top Ring Groove	No
Bore Diameter	87.00 mm
Combo 2	No
Compression Height	1.035
Compression Ratio	0.45138888888889
Compression Ratio Actual	10.50:1
Connecting Rod Length	STOCK IN
Contact Reduction	No
Country Of Origin	USA
Cylinder Head	EX/XR 400 R
Double Pin Oilers	No
DVGP	No
Econo Undercrown Milling	No
EN Plating	No
Engine	Honda
Engine Displacement	400cc
Engine Stroke	2.755 in
Engine Type	ICE
Exhaust Angle	0
Exhaust Depth	.135
Forging Type	Round
Gas Distribution	No
Intake Angle	26
Intake Depth	.275 in
Lateral Gas Ports	No
Mill Undercrown	No
Oil Groove Width	0.11100 in
Oil Ring Thickness	0.111 in
Pin Fit	Yes
Piston Average Weight	294 gr
Piston Head Type	Dome
Piston Material	2618
Piston Series	JE Pistons
Piston To Wall Clearance	-0.001999 in
Piston Volume	0.00 cc
Product Market	ATV
Product Type	Engine Piston Kit
Ring Set - Recommended	XC8700
Ring Set Included	Yes
Ring Set Part Number	XC8700
Second Compression Ring Thickness	0.0480 in
Skirt Coat	No
Smooth Crown Finish	No
Thermal Crown	No
Top Compression Ring Thickness	0.0400 in
Top Groove Width	0.04000 in
Tuff Skirt	No
Ultra Dome	No
Ultra Groove	No
Ultra Groove Plus Gas Port	No
Vertical Gas Ports	No
Wrist Pin Length	2.350 in
Wrist Pin Material	5115 Low Carbon Steel, Case Hardened
Wrist Pin Outer Diameter	0.787 in
Wrist Pin Wall Thickness	0.140 in

Warranty

30 Months

About JE Pistons

JE pistons are all designed, forged, and machined in-house, allowing control over every step of the piston-making process. JE Pistons 7+ decades of experience in high-level racing has led to offering premium racing features, including full billet construction, EN plating, and purpose-designed coatings, to name a few.

California residents

WARNING: This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.

Carb Status

California carb status to be completed