VMP 10 Rib Damper w/ 20% OD for 2020 GT500 and 10 Rib Odin Coyote Product Features: 10-rib version, not recommended for use with 8-rib belts, may jump due to no lip. 20% Overdrive (Diameter 7.91?) Adds approximately 4psi of boost ATI Damper made to VMP specs. New dual "lip" design and belt alignment standardized with 2020+ GT500 Compared to stock Coyote +1 back and +3 ribs forward. Compared to 2020+ GT500 +1 rib back and +1 rib forward. Not compatible with older VMP 8-rib 5%, 15%, and 25% systems VMP-ATI co-designed product is over 1/2 lb lighter than previous ATI-918047N with VMP-bolt on ring. Inertia ring is moved closer to front main bearing for less stress on the crank. Made in the USA Applications: Odin/Loki Supercharged Coyote with 10 Rib kit VMP-SUP0212020+ GT500 with 10 Rib kit Fits 11-21 Coyote with new-style 8/10 rib kit, must use 4-rib accessory belt KR3E-6C301-CA Requires super-low profile accessory tensioner VMP-SUT005