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SKU:
54-1157RT-51s
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Availability:
in stock
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SP1 Springs and Retainers
$18.94
[{"make":"Polaris","model":"600 Classic 121\"","years":[2005,2006]},{"make":"Polaris","model":"600 Classic Touring","years":[2003]},{"make":"Polaris","model":"700 Classic","years":[2002,2003,2004]},{"make":"Polaris","model":"800 Classic","years":[2004]},{"make":"Polaris","model":"700 Classic Touring","years":[2003]},{"make":"Polaris","model":"500 Classic","years":[2005,2006]},{"make":"Polaris","model":"500 XC","years":[2000,2001,2002]},{"make":"Polaris","model":"550 Classic 121\"","years":[2005,2006]},{"make":"Polaris","model":"500 Indy 121\"","years":[2005,2006]},{"make":"Polaris","model":"550 SuperSport 121\"","years":[2005,2006]}]
DESCRIPTION
SP1 Springs and Retainers
SP1 Springs and Retainers deliver precision, durability, and consistent performance for high-demand engines and racing applications. Engineered by SP1 for exact fitment and reliable valve control, these components help maximize RPM, reduce valve float, and extend valvetrain life.
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Premium materials: Heat-treated alloy springs and hardened retainers for superior fatigue resistance.
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Optimized design: Progressive and linear spring rates available to match your cam profile and application.
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Reliable fitment: Manufactured to tight tolerances for repeatable installation and consistent valve seating.
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High RPM performance: Prevents coil-bind and valve float under extreme loads.
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Applications: Ideal for racing, performance builds, and high-performance street engines.
Each SP1 kit is inspected for quality and balanced to provide smooth, predictable valvetrain behavior. Backed by SP1 engineering, these springs and retainers are a direct upgrade for enthusiasts and professional builders seeking proven results.
