Product Description
SOUTH BEND SDD3250-5 STREET/TOW DUAL DISC CLUTCH – 1994–2004 DODGE RAM 5.9L CUMMINS (NV4500 1-1/4")
Work-ready holding power with daily-drive manners. The South Bend SDD3250-5 is a multi-friction (organic/ceramic) dual disc built for tuned 5.9L Cummins trucks that still tow. Expect smooth engagement, manageable pedal effort from the diaphragm pressure plate, and serious torque capacity without the harsh on/off feel of race-only clutches.
- Capacity: ~650 HP / ~1,300 ft-lbs (vehicle dependent)
- Use case: Street/Tow, daily driving, heavy towing
- Discs: Dual, multi-friction (organic/ceramic) with floater
- Pressure Plate: Diaphragm style for lighter pedal
- Flywheel: Ductile iron, included
FITMENT
- Vehicle: 1994–2004 Dodge Ram 2500/3500
- Engine: 5.9L Cummins (12V & 24V)
- Transmission: NV4500 5-speed with 1-1/4" (1.25") input shaft
- Not for: NV5600 HO (use SDD3250-6) or 1-3/8" input conversions
WHAT'S INCLUDED
- Performance diaphragm pressure plate
- Two multi-friction clutch discs with floater plate
- Ductile flywheel
- Pilot bearing, release bearing, alignment tool, and hardware
INSTALL NOTES
- Confirm input shaft size (1.25") before ordering.
- Follow South Bend’s recommended break-in for best life and engagement.
- Inspect/refresh hydraulics; heavy-duty hydraulics improve consistency.
CROSS-REFERENCE / RELATED (INTERNAL LINKS)
- SDD3250-6 Street/Tow Dual Disc for NV5600 HO (2000.5–2005.5)
- South Bend HD Hydraulic Assembly (HYD-HD/HYDX)
- NV4500 1-3/8" Input Shaft Upgrade (if moving to 1.375" kits later)
- South Bend 13125-OFEK Single Disc (milder builds)
FAQ
Will this clutch tow reliably at higher GCW?Yes. This Street/Tow dual disc is designed for heavy towing when the drivetrain is in good condition. Downshift as needed to manage EGT and torque load.
How is the pedal feel compared to stock?
Thanks to the diaphragm pressure plate, pedal effort stays reasonable with a firm, positive engagement. Most owners consider it daily-driveable.
Does it fit NV5600 HO trucks?
No. NV5600 HO applications (2000.5–2005.5) typically use a different spec. See the SDD3250-6 instead.
Do I need upgraded hydraulics?
Recommended if your factory hydraulics are aging or you want the most consistent release and pedal feel under load.
Is it SFI certified?
No. This is a street/tow system. For competition use, consider an SFI-rated package.
