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Piston Set, 2618, Dome, 3.819 Bore, 0.838 CD, 0.748 Pin, Set of 1.

Part Number 260957 (132897642)
UPC: 193564028433
Package contents: 1 Each per Box
Select vehicle for guaranteed fit
MADE IN USA
$309.99 FREE SHIPPING
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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 powersports engines. Engineered, forged and machined 100 percent in the USA, JE Pro Series ATV pistons are designed for each specific engine and racing application with input from professional-level teams and racers. From motocross to dirt track and everything in between, JE Pistons' Pro Series are the ultimate forged piston choice for ATV competition.

Fitment

This part fits the following vehicles.

KTM

  • 2007-2012 450 SX-F
  • 2007-2009 450 XC-F

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 KTM 450 SX-F / XC-F 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.
  • Contact Reduction: Reduce the amount of contact area against the cylinder wall when the piston "Rocks over". Contact reduction also serves to disrupt the flame travel into the crevice area causing a reduction in detonation.
  • Double Pin Oilers: Deliver twice the amount of oil to the wrist pin as compared to the standard single pin oiler.
  • 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.
  • Skirt Coat: Skirt Coat reduces friction and wear on piston skirts and cylinder walls while simultaneously reducing operating noise
  • Designed specifically for each engine and use application to provide optimized performance durability

Specifications

3D Undercrown Milling No
Accumulator Groove Yes
Anodize Top Ring Groove No
Bore Diameter 97.00 mm
Combo 2 No
Compression Height 0.838
Compression Ratio 0.54513888888889
Compression Ratio Actual 13.50:1
Contact Reduction Yes
Country Of Origin USA
Cylinder Head 4 VALVE 450
Double Pin Oilers Yes
DVGP No
Econo Undercrown Milling No
EN Plating No
Engine KTM
Engine Stroke 2.394 in
Engine Type ICE
Exhaust Angle 12.5
Exhaust Depth .125
Exhaust Diameter 1.350
Forging Type FSR
Gas Distribution No
Intake Angle 10.5
Intake Depth .117 in
Intake Diameter 1.700 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 266 gr
Piston Head Type Dome
Piston Material 2618
Piston Series Pro Series
Piston To Wall Clearance -0.001999 in
Piston Volume 3.00 cc
Product Market ATV
Product Type Engine Piston Kit
Ring Set Included No
Skirt Coat Yes
Smooth Crown Finish No
Thermal Crown No
Top Compression Ring Thickness 0.0285 in
Top Groove Width 0.02850 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

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

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