LS To AR5 Transmission Adapter Kit

The LS To AR5 Transmission Adapter Kit by G FORCE CROSSMEMBERS is the backbone of any serious LS engine swap into a compact or mid-sized chassis. This kit bridges the gap between the ubiquitous LS engine block and the lightweight, durable Audi AR5 five-speed transmission, enabling builders to harness modern horsepower with proven, affordable drivetrain hardware. Whether you're executing a vintage vehicle restoration with contemporary power or optimizing weight distribution in a performance platform, this adapter kit unlocks compatibility between two powerhouse components that wouldn't otherwise mate.

Engineered by G FORCE CROSSMEMBERS with meticulous attention to bolt-pattern geometry and concentricity, the LS To AR5 adapter accommodates the fundamental dimensional mismatch between LS bellhousing and AR5 input shaft requirements. The kit includes precision-machined adapter plates and all necessary hardware to ensure proper alignment, eliminating potential drivetrain vibration and premature bearing wear caused by runout. At 7.15 pounds, the compact footprint (12 x 4.5 x 12 inches) preserves underbody clearance—critical in tight engine bays—while robust construction resists the torque multiplication demands of high-output LS platforms pushing 400+ horsepower.

Fabricators, restomod builders, and motorsport enthusiasts benefit most from this kit when pairing an LS engine with vintage five-speed manual platforms where overdrive efficiency and compact transmission length are priorities. Installation requires basic mechanical competency, proper torque specification adherence, and alignment verification with a dial indicator to guarantee smooth clutch engagement. This adapter is engineered for street and strip duty; verify your specific LS variant (Gen III, IV, or LS crate) and transmission serial number before purchase to confirm full compatibility with your drivetrain package.