2005 Mercedes Benz SL55 AMG Base Convertible 230.474 V8 5.5L
Upgrade your AMG M113K with the lightweight billet UPD 77mm pulley for massive 60-70+ RWHP gains and aggressive performance. 83mm and 88mm also available!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ECU Tune is required.
Eliminate weak factory plastic idlers with the UPD M113K Billet Idler Set - a high-strength CNC aluminum upgrade built for smoother operation, extreme durability, and long-term AMG reliability.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Lifetime Replacement
Eliminate weak factory plastic idlers with the UPD M113K Billet Idler Set - a high-strength CNC aluminum upgrade built for smoother operation, extreme durability, and long-term AMG reliability.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Lifetime Replacement
Includes all new hardware, pulley is Anodized in Black
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Only fits Weistec Supercharger
Lifetime Replacement
Includes all new hardware, pulley is Anodized in Black. This pulley is designed for cars without headers, and stock (150mm) crank pulley.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Only fits Weistec Supercharger
This product was last offered at the strikethrough price on
05-02-2026
Lifetime Replacement
Increase horsepower and torque! Tune required to safely run! 90+ wheel hp & torque increase, while maintaining a safe level of boost and supercharger rpm!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ECU Tune is required.
Includes all new hardware, pulley is Anodized in Black. This pulley is designed for cars with headers, and a stock (150mm) crank pulley.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Only fits Weistec Supercharger
Lifetime Replacement
Includes all new hardware, pulley is Anodized in Black
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Only fits Weistec Supercharger
Lifetime Replacement
