Q/C Gear Pro-Lite Set

The Q/C Gear Pro-Lite Set (Model 207-21C) from Coleman Racing Products is a quick-change gear system engineered for serious drag racers and performance enthusiasts who demand rapid ratio changes between rounds without removing the entire differential housing. This 10-spline pro-lite design eliminates downtime at the track, allowing you to optimize your final drive ratio for varying track conditions, weight, and boost levels in a matter of minutes. Whether you're dialing in a dedicated bracket racer or testing different setups for consistency, this gear set delivers the flexibility competitive racing demands.

Built from hardened steel with precision-cut tooth profiles, the Q/C Gear Pro-Lite Set incorporates two distinct ratio pairings to cover a wide performance window: 4.11 ratios (6.30 pinion / 2.68 ring) for lower gear multiplication and acceleration authority, and 4.86 ratios (7.45 pinion / 3.16 ring) for higher top-end capability on longer tracks. The pro-lite construction reduces rotational mass compared to full-strength units, lowering inertia load on the driveline and minimizing power loss during acceleration phases. The 10-spline carrier interface ensures secure engagement while maintaining the strength required for hard launches in supercharged or nitrous-assisted applications.

This gear set is ideal for bracket racers, sportsman drag competitors, and street/strip vehicles where gear ratio optimization directly impacts ET consistency and reaction time strategy. Installation requires a compatible quick-change differential housing and carrier assembly—verify your differential's spline count and carrier type before purchase. The compact footprint (5 × 1.7 × 7.7 inches, 3.6 lbs) and modular design make it a staple upgrade for anyone serious about extracting repeatable performance and competitive advantage at the drag strip.