Speedway Motors 9 Inch Steel Full Spool, Standard 33-Spline Design, CNC Machined Premium Steel for Drag Racing & Dirt Track Use, Locked Traction Performance

Durable CNC Machined Steel Full Spools For the ultimate in competition traction at the best value, nothing beats our machined steel full spools in yourCompatible with Ford 9 inch rear end. Stronger and lighter than a mini spool setup, and a better support for the ring gears–we offer these durable premium steel CNC-machined spools in Standard and Lightweight configurations. CNC machined steel guarantees a precise fit and extreme strength without unnecessary weight. The standard weight spool is the choice for extreme use on the strip and high horsepower/torque applications, and weighs is 8.7 lbs in 28-spline configuration and 8.0 pounds in 31-spline. Lightweight Version Available We also offer lightweight spools for the perfect combination of low-weight and strength. Excellent for dirt-track applications, the lightweight spools reduce rotating weight to reduce the spin-up time to maximum RPM and they reduce unsprung weight. The lightweight steel spool weighs 6.2 lbs. in 28-spline and 6.1 lbs. in 31-spline. Compare these to the nearly 14 lb. setup used in stock carrier with mini spool configurations and you quickly see the advantage of our full spools. Both spools use 1.781” I.D. carrier bearings, such as those in our overhaul kits. Get durable yet lightweight full spool traction for yourCompatible with Ford 9 inch rear end at a great value with our machined steel full spools. ForCompatible with Ford 9 inch rear axles. Stronger and lighter than a mini-spool setup, and better support for the ring gears. Premium steel construction provides extreme strength without excessive weight. CNC machined to precise dimensions ensures top quality. Standard steel spool weighs 8.7 lbs. in 28-spline and 8.0 lbs. in 31-spline. The lightweight steel spool weighs 6.2 lbs. in 28-spline and 6.1 lbs. in 31-spline. Both 28 and 31-spline spools use 1.781" ID carrier bearings such as overhaul kit 9190950-31 or 9190950-31S.

• CNC Machined Steel Construction — Precision CNC machining from premium steel delivers exceptional strength, exact fitment, and improved durability over traditional mini spool setups
• Locked Traction Performance — Full spool design provides consistent, equal power delivery to both wheels for maximum traction in competitive drag strip and dirt track applications
• Weight-Optimized Design Options — Available in standard or lightweight configurations to reduce rotating and unsprung mass for quicker acceleration and improved handling response
• Compatible with Ford 9 Inch Compatibility — Designed specifically for Compatible with Ford 9" rear ends and uses 1.781" I.D. carrier bearings common to popular overhaul kits
• Competition-Focused Upgrade — Stronger and lighter than stock carrier and mini spool combinations, offering superior ring gear support under extreme racing loads