The Centerforce 412615690 SST (Solid Street Twin) kit is a complete twin-disc clutch and flywheel package for 2009-2023 Dodge Challenger models with the 5.7L, 6.1L, 6.2L supercharged or 6.4L Hemi and a manual transmission. It puts two 10.4 in. organic discs and a floater plate behind a lightened billet steel flywheel, giving big-torque street cars a high holding capacity with lighter pedal effort and quicker revs than a heavy single-disc setup, with no shimming or setup adjustments required.

Centerforce 412615690 Technical Specifications:

• Twin 10.4 in. solid-hub organic discs with a floater plate and the Centerforce anti-rattle system.
• Lightened billet steel flywheel with a 130-tooth ring gear (13.205 in. O.D.) for an 8-bolt crankshaft flange.
• Discs fit a 1-1/8 in. input shaft with 26 splines.
• Holding capacity is rated up to 925 ft.-lbs., built for engines making roughly 400 ft.-lbs. and up.
• Built for the OE-depth (tall deck) bellhousing and OE passenger-side starter.
• Flywheel mounts with M10 x 1.00 crank bolts; covers 5.7L, 6.1L, 6.2L supercharged and 6.4L Hemi engines.
• Solid-hub discs reduce rotating weight on the input shaft for quicker shifts, though some gear noise is normal.
• Includes the pressure plate, two discs, floater, billet flywheel, pilot bearing, alignment tool and ARP pressure plate and flywheel bolts.
• Complete kit weighs 51.6 lbs.