Offroad Pro Series 2013-2016 Honda CRF 450R Piston Kit

Part Number 315158 (132899933)

UPC: 193564025920

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 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.

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
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
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	0.50347222222222
Compression Ratio Actual	12.50:1
Contact Reduction	No
Country Of Origin	USA
Cylinder Head	CRF 450
Deck Height	-0.03
Double Pin Oilers	No
DVGP	No
Econo Undercrown Milling	No
EN Plating	No
Engine	Honda
Engine Displacement	450cc
Engine Stroke	2.445 in
Engine Type	ICE
Exhaust Angle	10
Exhaust Depth	.140
Exhaust Diameter	1.360
Forging Type	FSR
Gas Distribution	No
Intake Angle	11.5
Intake Depth	.162 in
Intake Diameter	1.565 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	253 gr
Piston Head Type	Dome
Piston Material	2618
Piston Series	Pro Series
Piston To Wall Clearance	-0.0018 in
Piston Volume	-0.90 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

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