{"product_id":"quarter-mastergear-set-09","title":"Quarter Master Ultra-Duty Quick Change Gear Set #09 — 10 Spline Steel Gears","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Quarter Master\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eQuarter Master engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Quarter Master lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eDominate the Track with Quarter Master Ultra-Duty Quick Change Gear Set #09\u003c\/h2\u003e\u003cp\u003eGain a significant competitive advantage with the Quarter Master Ultra-Duty Quick Change Gear Set #09. This premium gear set is engineered to provide unparalleled strength and flexibility for your quick change differential, allowing for rapid and precise ratio adjustments to match any track condition. Constructed from robust steel with a 10-spline design, these gears are built to endure the most rigorous racing environments, ensuring consistent power delivery and reliability.\u003c\/p\u003e\u003ch3\u003eOptimized Ratios for Every Race\u003c\/h3\u003e\u003cp\u003eThe #09 gear set offers a broad spectrum of effective ratios, enabling you to fine-tune your vehicle's performance with exceptional precision. Starting with a 4.11 base ratio, you can achieve effective ratios from 4.98 to 3.40. With a 4.86 base ratio, the range extends from 5.88 to 4.01. This extensive adjustability ensures you can optimize your vehicle for maximum acceleration out of corners, top-end speed on straights, and improved overall handling dynamics, leading to superior lap times.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eHeavy-Duty Steel Construction:\u003c\/b\u003e Engineered for extreme durability and prolonged life under racing conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e10-Spline Engagement:\u003c\/b\u003e Provides a strong, reliable connection for efficient power transfer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWide Ratio Range:\u003c\/b\u003e Allows for precise tuning (4.11 base: 4.98 \/ 3.40; 4.86 base: 5.88 \/ 4.01).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSeamless Integration:\u003c\/b\u003e Specifically designed for quick change differential systems.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eQuarter Master: The Edge You Need\u003c\/h3\u003e\u003cp\u003eQuarter Master is a leader in high-performance drivetrain components, trusted by top racing teams for their unwavering quality and innovative designs. The Ultra-Duty Quick Change Gear Set #09 is a prime example of their commitment to helping you achieve victory. Invest in the reliability and performance that only Quarter Master can provide, and experience the difference on the track. Explore more top-tier racing parts at GGCRACING.COM.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Quarter Master products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/quarter-masterbellhousing-kit-sbc-crate-5-5in-v-drive-2d\" style=\"color:#0066cc;text-decoration:none;\"\u003eQuarter Master Bellhousing Kit SBC 5.5in V-Drive — Small Block Chevy Race Drivetrain\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/quarter-masteralum-bellhousing-package-5-5in-v-rear-mount-start\" style=\"color:#0066cc;text-decoration:none;\"\u003eQuarter Master Aluminum Bellhousing Package — 5.5in Triple Disc, V-Drive, Reverse Mount\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/quarter-masterbellhousing-kit-alum-5-5in-rm-v-drive\" style=\"color:#0066cc;text-decoration:none;\"\u003eQuarter Master Bellhousing Kit SBC 5.5in Triple Disc — Reverse Mount V-Drive\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/quarter-masterclutch-disc-10-4in-1-1-8-x-10-spline\" style=\"color:#0066cc;text-decoration:none;\"\u003eQuarter Master Clutch Disc 10.4in 1-1\/8 x 10 Spline — Organic Rigid Hub\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/quarter-masterclutch-cover-assembly-w-iron-pp\" style=\"color:#0066cc;text-decoration:none;\"\u003eQuarter Master Clutch Pressure Plate 10.4in Steel — Street Stock Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Quarter Master Ultra-Duty Quick Change Gear Set #09 \\u2014 10 Spline Steel Gears\",\"description\":\"Upgrade your quick change differential with the Quarter Master Ultra-Duty Gear Set #09. Features 10-spline steel gears for unmatched durability. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Quarter Master?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Quarter Master Ultra-Duty Quick Change Gear Set #09 \\u2014 10 Spline Steel Gears?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. 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