This is a spare gear set for the M-08 chassis. Keep your M-08 Concept RWD chassis in peak, smooth-running condition by changing out worn gears with these spare parts.  - M-08 Concept Spur Gear (37T/21T)*x1  - M-08 Concept Counter Gear (29T/23T)*x1  - M-08 Concept Idler Gear (23T) x1  - Compatible with M-08 Concept chassis cars.  - *denotes shared design with M-07 Concept.