Offroad Pro Series 2009-2012 Honda CRF 450R Piston Kit

Part Number 291513 (132897711)

UPC: 193564025937

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 Pro Series pistons for Honda CRF 450R Engines JE Pistons are engineered, forged and machined 100% in the USA. Equipped with the following custom level features

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.

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 CRF 450R 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

3D Undercrown Milling	No
Accumulator Groove	Yes
Anodize Top Ring Groove	No
Bore Diameter	96.00 mm
Combo 2	No
Compression Height	0.815
Compression Ratio	14:1
Compression Ratio Actual	14.00:1
Contact Reduction	No
Country Of Origin	USA
Cylinder Head	CRF 450
Deck Height	-0.016
Double Pin Oilers	No
DVGP	No
Econo Undercrown Milling	No
EN Plating	No
Engine	Honda
Engine Stroke	2.445 in
Engine Type	ICE
Exhaust Angle	10
Exhaust Depth	.100
Exhaust Diameter	1.400
Forging Type	FSR
Gas Distribution	No
Intake Angle	11.5
Intake Depth	.110 in
Intake Diameter	1.625 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	261 gr
Piston Head Type	Dome
Piston Material	2618
Piston Series	Pro Series
Piston To Wall Clearance	-0.0018 in
Piston Volume	1.40 cc
Product Market	Off-Road
Product Type	Engine Piston Kit
Ring Set - Recommended	ZV9600
Ring Set Included	Yes
Ring Set Part Number	ZV9600
Skirt Coat	No
Smooth Crown Finish	No
Thermal Crown	No
Top Compression Ring Thickness	0.0383 in
Top Groove Width	0.03830 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	0.748 in
Wrist Pin Wall Thickness	0.160 in

Warranty

30 Months

Magnuson-Moss Warranty Act

Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)).

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.