Piston Set, 2618, Dome, 3.820 Bore, 0.947 CD, 0.708 Pin, Set of 1.

Part Number 324912 (132900032)

UPC: 193564221056

Package contents: 1 Each per Box

Select vehicle for guaranteed fit

$329.99 ~~$346.99~~ SAVE 4% FREE SHIPPING

Out of stock

FREE SHIPPING

Description

As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its range of Pro Series pistons. Pro Series® Piston kits feature purpose-built forging designs that reduce overall piston weight without sacrificing strength or durability. Internal and external strut braces significantly reduce stress on critical areas while ultra-flat ring grooves improve ring seal for better, sustained performance.

Fitment

This part fits the following vehicles.

Yamaha

2016-2017 WR450F
2014-2017 YZ450F
2016-2017 YZ450FX

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 Yamaha YZ450F / WR450F 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.
Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss
Engineered, forged and machined 100 percent in the USA
Je Pro Seal Rings Included
Low Friction Skirt
Hand Deburred

Specifications

2nd Groove Width	0.06 in
3D Undercrown Milling	No
Accumulator Groove	Yes
Anodize Top Ring Groove	No
Bore Diameter	97.02 mm
Combo 2	No
Compression Height	0.947
Compression Ratio	0.58333333333333
Compression Ratio Actual	14.00:1
Contact Reduction	No
Country Of Origin	USA
Cylinder Head	YZ450F 2010
Deck Height	-0.023
Double Pin Oilers	No
DVGP	No
Econo Undercrown Milling	No
EN Plating	No
Engine	YAMAHA
Engine Displacement	450
Engine Stroke	2.394 in
Engine Type	ICE
Exhaust Angle	10.5
Exhaust Depth	.161
Exhaust Diameter	1.285
Forging Type	FSR
Gas Distribution	No
Intake Angle	11
Intake Depth	.143 in
Intake Diameter	1.540 in
Lateral Gas Ports	No
Mill Undercrown	No
Oil Groove Width	0.07950 in
Oil Ring Thickness	0.0795 in
Pin Fit	Yes
Piston Average Weight	275 gr
Piston Head Type	Dome
Piston Material	2618
Piston Series	Pro Series
Piston To Wall Clearance	-0.002 in
Piston Volume	1.60 cc
Product Market	Off-Road
Product Type	Engine Piston Kit
Ring Set - Recommended	XS9700
Ring Set Included	Yes
Ring Set Part Number	XS9700
Second Compression Ring Thickness	0.0600 in
Skirt Coat	No
Smooth Crown Finish	No
Thermal Crown	No
Top Compression Ring Thickness	0.0480 in
Top Groove Width	0.04800 in
Tuff Skirt	No
Ultra Dome	No
Ultra Groove	No
Ultra Groove Plus Gas Port	No
Vertical Gas Ports	No
Wrist Pin Length	2.050 in
Wrist Pin Material	9310 Nickel Carbon Steel Alloy
Wrist Pin Outer Diameter	0.708 in
Wrist Pin Wall Thickness	0.160 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