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JE, Yamaha, 98.00 mm Bore, 1 Cyl. Kit

Your Price: $309.99

SKU: 222087

Please Allow Approximately 3 Weeks or Less for Shipping

JE, Yamaha, YZ450F / WR450F Gas Gas EC 450F, 12.50:1, 98.00 mm Bore, 1 Cyl. Piston Kit

As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons for dirt bike and other off-road motorcycle engines. Engineered, forged and machined 100% in the USA, JE Pistons are designed for each specific engine and riding application to provide the ultimate combination of durability and performance. From the motocross track to the trail and everything in between, JE Pistons’ performance is proven with every handful of throttle and wave of the checkered flag. Equip your bike with the best in forged pistons.

  • Forged in the USA using 2618 aluminum, yielding high tensile strength needed for high-demand performance applications
  • Designed specifically for each engine and use application 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

GTIN: 00193564220882

Piston Series

JE Pistons

Cylinder Head

YZ 450F 5V

Bore Diameter

98.00 MM

Compression Ratio Actual

12.50:1

Piston Head Type

Dish

Piston Volume

0.00 CC

Piston Material

2618

Forging Type

FSR

Piston Average Weight

293 GR

Ring Set Included

Yes

Top Compression Ring Thickness

0.0480 IN

Second Compression Ring Thickness

0.0600 IN

Oil Ring Thickness

0.0795 IN

Wrist Pin Material

9310 Nickel Carbon Steel Alloy

Wrist Pin Length

2.050 IN

Wrist Pin Wall Thickness

0.160 IN

Years

2015
2014
2013
2004
2003

Makes

Gas Gas
Yamaha

Models

EC 450F
WR450F
YZ450F
Instructions: Enter a value in the un-shaded boxes below as they pertain to your engine.
Note: For pistons BELOW the block @ TDC – value in box must be a NEGATIVE number (-0.000)
Note: For pistons ABOVE the block @ TDC – value in box must be a POSITIVE number (0.000)
Note: For a DISH piston – value in box must be a NEGATIVE number (-0.0)
Note: For a DOME piston – value in box must be a POSITIVE number (0.0)
Note: Manipulate the DOME/DISH & PISTON to DECK volumes to get the ratio you want.
Enter the number of cylinders of your engine
Bore
Finished bore of your engine
Stroke
Stroke of your engines crankshaft
Rod Length
Ctr. to Ctr. length of your connecting rods
Gasket Bore
Head Gasket bore diameter
Comp. Gasket
Compressed Head Gasket thickness
Block Deck Height
Center of main bearing bore to top of block
Top Ring Down
Top of 1st ring to top of pistons(FLAT)
Chamber Volume
Cylinder Head chamber volume in CC’s
Dome/Dish Volume
DOME (-) or DISH (+) vol. (theoretical) in CC’s
Piston to Deck
Top of BLOCK to top of piston (FLAT) @ TDC
Click “Calculate” for dimension results.
Total Volume
 
Cylinder Volume
Total cylinder volume in CC’s =
Clearance Volume
All effective vol. above block deck @ TDC in CC’s =
Gasket Volume
Volume of your head gasket in CC’s =
Top Ring Volume
Total volume above the top ring @ TDC in CC’s =
Deck Volume
Volume of area above the pistons @ TDC in CC’s =
Piston Top Land
Piston top land diameter for volume calculations =
1/2 Stroke
1/2 stroke of your engine’s crankshaft in inches =
Compression Ht.
Ctr. of piston pin to top of piston (FLAT) in inches =
Cubic Inches
Cubic inch displacement of your engine =
For the given dimensions, your compression ratio