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  • Diesel Upgrades
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ITW will combine shipping for multiple item purchases. On worldwide shipments, buyer must provide a valid phone # & valid address. On Free Ground Shipping Offers, I will adjust shipping charges during checkout on my end when I send you an invoice. Thanks !

Idaho Transmission is supplier for many name brand diesel & performance upgrades you know by name! Transgo Reprogramming/Shift Kits & specialty parts, Sonnax specialty items, High Torque custom torque converters, Alto Red Eagle kits & Powerpacks, Superior Transmission Solutions, Valeo clutch kits (now partnered with Centerforce), Eaton, TCS High Performance Billet Shafts, and many more. If you don't see it, ask us! 

LCT1000 C2 Billet Hub
Billet Mainshaft
Billet Input Shaft
Billet Intermediate Shaft
Ask about our newest High Performance Kit for the 6L80/6L90E Transmission
Includes Red Eagle Frictions/Kolene Steels with
 3 PowerPacks!
Also available billet shafts for most diesel applications. If you don't see it listed, please contact us!



Free Ground Shipping to the lower 48 states on most orders over $50