Description
Quick-change gear sets eliminate downtime between races and testing sessions—swap ratios in minutes without breaking down your entire differential. The Quarter Master 21Q delivers the gear flexibility serious competitors need, with ultra-duty steel construction rated for high-horsepower applications and repeated shifts under load. Whether you’re dialing in launch characteristics or optimizing top-end efficiency, having multiple ratios ready means more seat time and faster lap times.
- Quick-change design
- Ultra-duty steel construction
- 10-spline configuration
- 4.11 ratio available (6.30 / 2.68)
- 4.86 ratio available (7.45 / 3.17)
- Sold individually
- MPN: 911533
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