Tilton ST-246 Twin-Disc Clutch Kit | GM LSA/LSX 8-Bolt | 850 lb-ft Organic
Key Features
- 850 lb-ft torque capacity with sprung-hub organic discs for smooth street engagement
- Precision-machined aluminum pressure plate cover - superior strength and balance vs. stamped steel OEM-style units
- Double-thick floater plate eliminates gear chatter and provides superior heat dissipation
- Billet chromoly flywheel with 153-tooth ring gear and precision register for optimal balance [VERIFY: Product data lists both 153-tooth and 168-tooth ring gear - confirm correct spec]
- Heavy-duty straps connect pressure plate and floater to minimize noise and ensure clean release
- 26-spline disc hub (26 x 1-1/8") - compatible with TREMEC T-56, TKO, and similar transmissions
- Internally balanced (zero-balance) flywheel for GM LSA/LSX 8-bolt crank flange
- Tilton HR throwout bearing included [VERIFY: Main description says included, custom field says not included - confirm kit contents]
- Engineered from 50+ years of Tilton racing clutch technology
Description
When your LSA or LSX build pushes beyond what factory clutches can handle, the Tilton ST-246 delivers race-proven holding power with street-friendly manners. Rated at 850 lb-ft of torque, this twin-disc assembly was engineered from the ground up as a true performance clutch - not an afterthought OEM stamped-steel cover with a floater plate tacked on. The precision-machined aluminum pressure plate cover shares technology directly from Tilton's championship-winning OT-Series racing clutches, providing superior strength, stiffness, and dynamic balance compared to the stamped steel alternatives.
The ST-246's secret weapon is its floater plate design - machined at twice the thickness of competing twin-disc clutches. This extra mass serves three critical functions: it allows the use of sprung-hub discs for smooth engagement, eliminates the gear chatter common in twin-disc setups, and provides significantly greater thermal capacity to resist warpage under hard use. Heavy-duty straps connect the pressure plate and floater to the cover, minimizing noise and delivering a clean, predictable release.
The organic friction discs feature sprung center hubs that dampen engine vibrations and reduce gearbox noise - essential for a streetable driving experience. The billet chromoly flywheel includes an integrated ring gear and a precision register bore that locates the clutch assembly perfectly, eliminating the loose-fitting bolts and dowel pins that create imbalance in lesser setups. This kit is designed specifically for GM LSA and LSX engines with 8-bolt crankshaft flanges and mates to 26-spline input shaft transmissions including TREMEC T-56 and TKO variants.
Since 1972, Tilton Engineering has supplied championship-winning clutches to the highest levels of motorsport - F1, NASCAR, IMSA, IndyCar, SCCA, Formula Drift, and SCORE. The ST-246 brings that proven expertise to the high-performance street market at a competitive price point.
Kit Includes
- Precision-machined aluminum clutch cover assembly with heavy-duty straps
- High-mass pressure plate machined from proprietary racing clutch materials
- Double-thick steel floater plate
- Two organic friction discs with sprung center hubs (26 x 1-1/8" spline)
- Billet chromoly steel flywheel with integrated ring gear (internally balanced for 8-bolt LSA/LSX)
- Clutch alignment tool
- Flywheel bolts
- Clutch cover bolts
- Tilton HR throwout bearing [VERIFY: Confirm if throwout bearing is included or not]
- Installation instructions
Note: Pilot bearing not included.