Performance Eng QCNT-486MAX Quick Change Rear Axle Assembly No Tubes 4.86 Ratio

The Performance Engineering QCNT-486MAX is a MAX Option quick change rear axle assembly designed for high-performance circle track racing applications. This no-tubes center section features a 4.86:1 ratio with a 10-inch ring gear, providing the foundation for a custom quick change rear end build.

MAX Option Features:

• Black thermal coating inside and outside for superior heat dissipation
• REM (Rotating Element Method) finished ring and pinion gears for reduced friction and drag
• REM finished bearings and races throughout for maximum efficiency
• Drilled aluminum spool to reduce rotating mass
• Drilled lower shaft for weight reduction
• Billet rear cover for increased strength and durability
• Breather kit included
• Lightened ring gear for improved acceleration

Construction and Components:

• Lightweight magnesium/aluminum alloy permanent mold castings
• Heat-treated lower shaft for durability
• Roller pinion nose bearing for smooth operation
• Aluminum pinion posi nut
• 4.86:1 standard ratio ring and pinion set

This no-tubes version allows racers to custom-fit their own axle tubes and housing width to meet specific class requirements or vehicle specifications. The MAX Option upgrades deliver measurably lower drag and friction compared to standard quick change assemblies, translating to improved performance on the track. Ideal for Modified, Late Model, and other circle track racing divisions where quick gear changes and low-drag performance are essential.