The South Bend Clutch K70526-HD Stage 1 Heavy-Duty Clutch Kit is engineered for high-performance BMW 135i, 535i, and 435i models with 3.0L engines from 2008 to 2014. Designed to deliver reliable torque capacity and smooth engagement, this clutch assembly is ideal for enthusiasts and fleet operators who demand durability and consistent power transfer. The kit features premium friction materials that ensure a secure grip while maintaining smooth pedal feel, even under severe towing or spirited driving conditions. Its robust construction minimizes clutch slippage and enhances thermal capacity, providing long-term reliability in demanding applications. This upgrade is suitable for street performance, daily driving, and fleet duty, ensuring your vehicle maintains optimal drivability and power delivery under heavy loads.
Features:
- Heavy-duty diesel and fleet torque capacity for demanding applications
- Premium friction materials for smooth and consistent engagement
- Enhanced thermal capacity to prevent clutch slippage during severe towing
- Long-term drivetrain reliability with durable, high-performance components
Fitment:
BMW 1 Series M Base 2011
BMW 135i Base 2008 to 2013
BMW 135is Base 2013
BMW 435i Base 2014 to 2016
BMW 435i xDrive Base 2014 to 2016





