6L90 (One-Piece) Performance Transmission Billet Shaft, Hub & 4-5-6 Clutch Kit
1/18/21: Currently on backorder - place your order now - it will be filled as soon as the part is available on a first-come, first-served basis.Rated up to 1100 RWHP | Detailed Instructions Included | FREE UPS Domestic Ground Shipping
Out of Stock - on backorder and will be dispatched once in stock.
All in stock items ship same day if the order is received by noon, CST. All orders placed on weekends and holidays will ship the following business day.
Picture for representation purposes only - actual contents may vary as we continue to develop our product.
- One-piece 300M steel forging is heat treated and shot-peened for maximum durability. This shaft doubles oil flow to the clutch pack for improved resistance to heat and longer clutch life. The hub is designed for use with Powerglide-style, 45-tooth frictions. This shaft is designed for use without OE dampner.
The ideal upgrade for performance vehicles with GM 6L80 transmissions, this extreme duty 4-5-6 clutch hub and intermediate shaft 104680-45 guarantees maximum protection against shaft breakage. The unique hub design improves oil flow and accepts Powerglide-style frictions to optimize clutch durability. In place of the two-piece shaft/hub, this one uses a much stronger, one-piece design that eliminates the OE assembly’s weak, welded connection. The one-piece design is custom forged from ultra high-strength 300M billet steel, then heat-treated and shot peened for added durability. This combination of features guards against broken 4-5-6 hubs and the risk of rear splines shearing off — chronic failures in performance cars. The 4-5-6 clutch is released in 1st, 2nd and 3rd Gears, and at high RPMs, constant oil flow is required across the spinning clutch frictions to prevent heat build-up and damaged clutches. The unique, upgraded design of the hub doubles oil flow to the clutches for significantly more protection against heat build-up and clutch failure.
- 4-5-6 Clutch Kit offers 45% more clutch apply area than stock. G3® friction material is formulated to achieve minimal wear and maximize heat resistance. Lindered is a chemical and heat treatment process that hardens the steel, which results in less wear. Hi-Per Blue® Pistons are manufactured with upgraded High Performance Blue AEM material for superior thermal and chemical resistance, with better fit and performance.
6L90 Level 3-4, 4-5-6 CLUTCH KIT
8 G3® Clutches
10 Lindered Steels (varying thicknesses)
1 Stepped Apply Plate
1 Wide Backing Plate
1 Snap Ring
2 Hi-Per Blue® Bonded Pistons