Big stack overdrive shaft, reaction plates, and large input drum
Large input drum apply area to increase toque holding by a further 16%
54% increased torque holding capacity
16 Overdrive friction surfaces
Billet QT100 Reaction plates
Longer clutch engagement area
33% more steel mass for better heat absorption
Raybestos clutches B29308L / B29309L are required (included in BD Build-It kits)
Big Stack Overdrive Shaft & Drum Kit
Are you a looking to rebuild your own transmission and needing some specialty parts to match your application? BD offers a range of rebuild parts kits featuring the same parts we use in our own performance transmissions for the seasoned builder to complete the job. All kits include the basic rebuild parts and gaskets and have the added touches that range from stock HP up to our Stage 4 Master Kit - which is pretty well everything we put in our own transmission rebuilds.
This product does not require an EO in California. By nature of its design, it is legal for sale and use in all 50 states. Replacement parts included. (EMS:4)
FITMENT GUIDE
Exact Fitment — Verify Your Year
Year RangesYears
Make
Model
Series
Engine
2007.5-2024
Dodge RAM/RAM
2500/3500
6.7L Cummins
CUSTOMER REVIEWS
What Buyers Say
Call a Diesel Expert, we'll find the right fit for your build
Not sure this part is right for your truck? Our team knows these platforms inside out. No hold music, no scripts.