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Ships within 48 hours · Estimated delivery Aug 1 - Aug 6
send-in upgrade service is required to enable diagnostics and tuning capabilities through VCM Suite
and more reliable than the factory design
Three multicolor RGB indicator lights
Tune your 2024-2025 Silverado/Sierra 2500/3500 with the 6
Big Boost Valve Spring Kit | 1998.5 - 2024 Cummins Tuning Packages send-in upgrade service is requiredFrom daily drivers and heavy duty tow rigs to full blown drag strip builds, these springs are engineered to handle everything from mild upgrades to wild performance. Unlock the full potential of your Cummins engine with the Performance Diesel Worx Big Boost Valve Spring Kit, engineered for superior performance, durability, and reliability. This complete drop in package delivers 103 lbs. of seat pressure and 176 lbs. of open pressure at 0. 420
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