Product Description
SOUTH BEND SDD3250-GK STREET/TOW DUAL DISC – 2005.5–2018 DODGE RAM 5.9/6.7 CUMMINS (G56 6-SPEED)
Work-ready holding power with daily-driver manners. The South Bend SDD3250-GK is a multi-friction (organic/ceramic) street/tow dual disc engineered for tuned 5.9/6.7 Cummins trucks running the G56 6-speed. Expect smooth engagement, light pedal effort from the diaphragm pressure plate, and real-world durability for towing and heavy use.
- Capacity: ~650 HP / ~1,300 ft-lbs (setup dependent)
- Use case: Street/Tow, daily driving, heavy towing
- Pedal feel: Light, diaphragm-style 3250 lb pressure plate
- Discs: Dual, multi-friction (organic/ceramic) facings
- Flywheel: Ductile iron included
- Hydraulics: Heavy-duty/adjustable assembly included
- Not SFI certified (street/tow use)
FITMENT
- Engine: 5.9L (2005.5) & 6.7L (2007.5–2018) Cummins
- Model Years: 2005.5–2018 Ram 2500/3500 (manual transmission)
- Transmission: G56 6-speed manual
- Input Shaft: Stock 1.25" x 10-spline. Not for 1-3/8" (1.375") input upgrades.
WHAT'S INCLUDED
- Diaphragm pressure plate (approx. 3250 lb)
- Two multi-friction clutch discs + stabilized floater
- Ductile flywheel
- HD/adjustable hydraulic assembly
- Pilot bearing, release bearing, alignment tool, hardware
CROSS-REFERENCE / ALTERNATIVES
- For competition/SFI needs: consider an SFI-rated dual or triple-disc package (not included here).
- For 1-3/8" input shaft conversions: choose the matching 1.375" clutch variant.
- For lighter builds and stock-like feel: a single-disc organic performance kit may suffice.
INSTALL NOTES
- Confirm input shaft size before ordering (this kit is for 1.25").
- Follow South Bend’s break-in procedure for best life and engagement.
- Inspect slave/master lines and fork for wear when installing; replace if fatigued.
FAQ
Will this clutch comfortably tow heavy (20–30k lbs GCW)?Yes. This Street/Tow dual disc is designed for heavy towing when the truck is in good mechanical condition. Use proper gearing to manage EGTs and driveline stress.
How does pedal feel compare to stock?
Surprisingly light for the holding power thanks to the diaphragm-style pressure plate, with smooth take-up from the organic-facing sides.
Does it include a flywheel and hydraulics?
Yes—this kit includes a ductile flywheel and a heavy-duty/adjustable hydraulic assembly.
Is it compatible with a 1-3/8" input shaft?
No. This kit is for the stock 1.25" input. If you’ve converted to 1-3/8", select the matching 1.375" clutch variant.
Is it SFI certified for competition?
No. This is a street/tow system. Choose an SFI-rated package for competition use.
