These lower pulleys are compatible with ATI part numbers 918854 and 918856 for the LSA and LT4 (Camaro/CTS-V only) damper. They are machined from 6061 aluminum and anodized for protection.
The pulleys are available in five sizes:
- 230mm (9.06″) [LSA 15%/LT4 12%]
- 235mm (9.25″) [LSA 18%/LT4 15%] IDLER RELO BRACKET REQUIRED FOR LSA
- 240mm (9.45″) [LSA 20%/LT4 17%] IDLER RELO BRACKET REQUIRED FOR LSA
- 245mm (9.65″) [LSA 23%/LT4 20%] IDLER RELO BRACKET REQUIRED FOR LSA
- 250mm (9.84″) [LSA 25%/LT4 22%] IDLER RELO BRACKET REQUIRED FOR LSA
Note the 9.84 can interfere with the sway bar on extreme suspension geometry events in LT4 ZL1s/CTS-Vs.
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