![PROGRESSIVE SUSPENSION-429 Series Shock Spring / M8-Shocks-MetalCore Harley Supply](http://metalcoresupply.com/cdn/shop/products/429-series-shock-spring-m8-260059.png?v=1681486039&width=1054)
429 Series Shock Spring / M8
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- Fits 18 - 22 FX Softail
- 12.6" shock is standard length for FXBB / FXBR / FXLR models
- 13.1" shock is standard length for FXFB models
- High pressure nitrogen charged damper
- Progressive rate spring
- 40 mm monotube construction
- High performance MCU joust bumper
- Deflective disc valving
- Hard chrome precision ground damper rod
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![PROGRESSIVE SUSPENSION-429 Series Shock Spring / M8-Shocks-MetalCore Harley Supply](http://metalcoresupply.com/cdn/shop/products/429-series-shock-spring-m8-260059.png?v=1681486039&width=1054)
429 Series Shock Spring / M8
Sale price$494.95 USD
Regular price