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!
ECU Tune is required.
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!
ECU Tune is required.
Designed to stop the slipping of the belt under boost pressure!
Designed to stop the slipping of the belt under boost pressure!
This product was last offered at the strikethrough price on
05-10-2026
Increase horsepower and torque! Tune required to safely run! 90+ wheel hp & torque increase, while maintaining a safe level of boost and supercharger rpm!
ECU Tune is required.
Increase of +211 Horsepower, and +208 Torque! Taking you from stock 469 Horsepower, up to 680hp, and from stock torque 516, up to 724tq!
Fuel injectors are not included. Consult your tuner of preference for their recommended fuel injectors for your power goals.
Increase of +211 Horsepower, and +208 Torque! Taking you from stock 469 Horsepower, up to 680hp, and from stock torque 516, up to 724tq!
650cc Fuel Injectors Included!