JE Pistons
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JE Pistons

JE Pistons Wrist Pin Retainer - 0.630 In Diameter - 0.050 In Thickness - Wire Lock

SKU: JEP630-050-MW

Most JE shelf pistons include double spiro locks as standard ...Read more

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$5.99
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

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Product Details

Product Description
Part Numbers
Sizing & Fit
Most JE shelf pistons include double spiro locks as standard equipment. These locks are installed by spreading the lock between 1/8" and 1/4" and rotating the lock into the groove in the piston pin boss. Wire locks are installed in much the same manner but require chamfered wrist pins. Wire locks tend to spread side loads over more of the piston pin boss area and are considered to be a stronger method of holding the pin in place. Hook wire locks have a built in hook at the end gap. The purose for this style of wire lock is to prevent rotation within the lock groove itself. Tru arc locks fall between these two and can be used with the stock sharp edge wrist pins. The advantage of tru-arc locks is ease of installation and they can be re-used unlike spiro locks, however they are not recommended for medium to high horsepower applications.

This Part Fits:

Year Make Model Submodel
2007-2012 Honda CRF150R Base
2004-2015 Honda CRF250R Base
2004-2017 Honda CRF250X Base
2014-2015 Husqvarna FC250 Base
2004-2014 Kawasaki KX250F Base
2005-2015 KTM 250 SX-F Base
2007-2013 KTM 250 XC-F Base
2007-2013 KTM 250 XCF-W Base
2001-2013,2015-2017 Yamaha WR250F Base
2001-2018 Yamaha YZ250F Base
2015-2019 Yamaha YZ250FX Base
Most JE shelf pistons include double spiro locks as standard equipment. These locks are installed by spreading the lock between 1/8" and 1/4" and rotating the lock into the groove in the piston pin boss. Wire locks are installed in much the same manner but require chamfered wrist pins. Wire locks tend to spread side loads over more of the piston pin boss area and are considered to be a stronger method of holding the pin in place. Hook wire locks have a built in hook at the end gap. The purose for this style of wire lock is to prevent rotation within the lock groove itself. Tru arc locks fall between these two and can be used with the stock sharp edge wrist pins. The advantage of tru-arc locks is ease of installation and they can be re-used unlike spiro locks, however they are not recommended for medium to high horsepower applications.

This Part Fits:

Year Make Model Submodel
2007-2012 Honda CRF150R Base
2004-2015 Honda CRF250R Base
2004-2017 Honda CRF250X Base
2014-2015 Husqvarna FC250 Base
2004-2014 Kawasaki KX250F Base
2005-2015 KTM 250 SX-F Base
2007-2013 KTM 250 XC-F Base
2007-2013 KTM 250 XCF-W Base
2001-2013,2015-2017 Yamaha WR250F Base
2001-2018 Yamaha YZ250F Base
2015-2019 Yamaha YZ250FX Base

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