{"product_id":"performance-engineering-manufacturingpremium-quick-change-gears-set-21a","title":"Performance Engineering \u0026 Manufacturing Premium Quick Change Gears Set 21A — 10 Spline Steel Gear Set","description":"\u003ch2\u003ePrecision Engineered Quick Change Gears\u003c\/h2\u003e\u003cp\u003eUnlock superior drivetrain performance with the Performance Engineering \u0026amp; Manufacturing (PEM) Premium Quick Change Gear Set 21A. Designed for competitive racing environments, this gear set provides the exact ratio adjustments needed to dominate the track. Crafted from high-grade, durable steel, these gears are built to withstand high-torque applications while maintaining smooth power transfer.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSet Number:\u003c\/strong\u003e 21A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpline Count:\u003c\/strong\u003e 10 Spline\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4.11 Ring \u0026amp; Pinion Ratio:\u003c\/strong\u003e 6.32 \/ 2.69\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4.86 Ring \u0026amp; Pinion Ratio:\u003c\/strong\u003e 7.45 \/ 3.17\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-Strength Heat-Treated Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Standard Quick Change Rear Ends\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you are fine-tuning your vehicle for a short track or a high-speed circuit, the PEM 21A gear set offers the reliability and consistency required by professional racers. The 10-spline design ensures a secure fit, reducing vibration and wear during intense heat cycles. These gears are engineered for rapid installation, allowing you to adapt your gear ratios quickly between heats to optimize your vehicle's acceleration and top-end speed. By choosing premium steel components, you ensure long-lasting durability and peak performance under the most demanding racing conditions. Trust GGCRACING for all your high-performance drivetrain needs and gear ratio requirements.\u003c\/p\u003e","brand":"Performance Engineering \u0026 Manufacturing","offers":[{"title":"Default Title","offer_id":41120355385428,"sku":"GSDD_65021A","price":153.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/PEM65021A.jpg?v=1717304829","url":"https:\/\/ggcracing.com\/en-co\/products\/performance-engineering-manufacturingpremium-quick-change-gears-set-21a","provider":"GGCRACING INC","version":"1.0","type":"link"}