TRZ Motorsports 2" Drop Billet Spindles & Steering Arms - 7/16-14 Caliper Bracket Bolt Size - 1 Pair (1978 - 1988 Chevy Malibu - G-Body / 1982 - 2002 Chevy Blazer & S-10 - 2WD) - 328-63 & 303
High-Strength 2? Drop Billet Spindles for G-Body & S-10 Drag Racing
The TRZ Motorsports 2? Drop Billet Spindles & Steering Arms are engineered for racers looking to optimize front suspension geometry, reduce weight, and run stock-style drag race brake kits on G-Body and S-10/Blazer 2WD platforms. Built from 6061 billet aluminum and equipped with 17-4 heat-treated stainless steel spindle pins, these spindles deliver exceptional durability and precision under high-load drag race conditions.
This kit includes a pair of billet 2? drop spindles, matching TRZ 6061 billet steering arms, and all required hardware. Optional Quick Steer Arms (303-QS) can be selected for dramatically improved turning radius - up to a 30% increase for vehicles running rack-and-pinion systems.
Weighing only 11 pounds total (spindles + arms + hardware), these components offer a major unsprung weight savings compared to factory cast parts. The 2? drop design sharpens weight transfer, improves launch stability, and maintains correct geometry for drag racing setups.
This version features a 7/16-14 caliper bracket bolt thread, matching the current production Strange brake kits (post - September 2021). As brake manufacturers vary thread sizes by year, TRZ strongly recommends physically measuring your existing bracket hardware for proper compatibility.
A bump-steer kit is required, as TRZ steering arms use a 1/2? straight tie-rod hole and extend the tie rods to help achieve proper geometry.
Performance Features
- Precision-machined 6061 billet aluminum construction
- 2? drop spindle design improves suspension geometry and weight transfer
- Heat-treated 17-4 stainless steel spindle pins
- Includes billet 6061 steering arms and mounting hardware
- Optional Quick Steer Arms improve rack-and-pinion turning radius by up to 30%
- Compatible with stock-style drag race brake kits: Strange, TBM, Wilwood 140-1033-BD
- Total assembly weight: 11 lbs (pair)
- Straight 1/2? tie-rod hole simplifies bump-steer correction
- This version uses 7/16-14 caliper bracket bolts
Brake Kit / Thread Size Compatibility Notes
- Strange Brakes: Current kits (post - Sept 2021) ? 7/16-14 thread
- TBM Brakes: Post - Sept 2023 ? 3/8-24 thread
- Wilwood: Uses 3/8-24 thread; requires trimming bracket to use 2 of 3 bolts
- Aerospace: Uses 3/8-16 thread; replace with 3/8-24 bolts
- Aerospace brackets without spacers may need clearancing to mount flush
- Always measure your bolt size for accurate fitment
Quick Specs
- Drop: 2?
- Material: 6061 billet aluminum
- Spindle Pins: 17-4 heat-treated stainless steel
- Caliper Bolt Thread: 7/16-14
- Weight: 11 lbs per assembled pair
- Steering Arms: TRZ billet (303), Quick Steer optional
- Part Numbers: 328-63 & 303
Fitment
- 1978 - 1988 Chevy Malibu (G-Body)
- 1982 - 2002 Chevy S-10 / Blazer (2WD)
Frequently Asked Questions
Why do the 2? drop spindles require a bump-steer kit?
TRZ steering arms lengthen the tie rods and use a 1/2? straight hole, requiring bump-steer correction to maintain proper geometry after lowering.
How do I verify if 7/16-14 is the correct bolt size?
You must measure your current caliper bracket bolt threads; brake manufacturers changed sizes throughout production, so visual guessing is unreliable.
Why Buy from Beefcake Racing?
Beefcake Racing carries the full line of TRZ Motorsports front suspension components with expert guidance and fast shipping. For help with brake bolt sizing, bump-steer kits, or steering arm upgrades, contact us at sales@beefcakeracing.com or call 1-855-827-7223.
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