TRZ Motorsports 2" Drop Billet Spindles & Steering Arms - 8mm x 1.25 Caliper Bracket Bolt Size - 1 Pair (1978 - 1988 Chevy Malibu - G-Body / 1982 - 2002 Chevy Blazer & S-10 - 2WD) - 328-61 & 303
Lightweight 2? Drop Billet Spindles for G-Body & S-10 Drag Race Applications
The TRZ Motorsports 2? Drop Billet Spindles & Steering Arms deliver a race-proven combination of strength, precision, and optimized suspension geometry for G-Body and S-10/Blazer 2WD platforms. CNC-machined from 6061 billet aluminum and built with 17-4 heat-treated stainless steel spindle pins, these spindles are designed to work with stock-style drag race brake kits that fit factory spindles. (Note: They do not accept late-model S-10/Blazer brake kits with factory 2-piston calipers.)
Each kit includes a matching pair of TRZ billet 6061 steering arms and hardware. You may also upgrade to TRZ Quick Steer Arms (303-QS), which dramatically improve turning radius - up to a 30% increase on rack-and-pinion conversions.
The 2? drop design improves suspension geometry, enhances weight transfer, and lowers the front end without sacrificing strength. Total assembly weight for both spindles, arms, and hardware is just 11 pounds, offering a significant unsprung weight advantage.
These spindles require a bump-steer correction kit. TRZ steering arms are engineered to lengthen tie rods for better geometry and use a convenient 1/2? straight hole instead of a taper. TRZ offers complete kits for stock steering and narrowed Pinto rack configurations tailored to both G-Body and S-10/Blazer platforms.
Brake kit compatibility varies by caliper bracket bolt thread. TRZ provides detailed thread sizing notes to ensure proper selection or modification.
Performance Features
- 6061 billet aluminum 2? drop spindles for 1978 - 1988 G-Body & 1982 - 2002 S-10/Blazer 2WD
- 17-4 heat-treated stainless steel spindle pins for maximum strength
- Includes billet 6061 steering arms and hardware
- Optional Quick Steer Arms (303-QS) improve turning radius up to 30%
- Designed for race brake kits built for stock-style spindles
- Total assembly weight: 11 lbs (pair with arms & hardware)
- Uses a 1/2? straight hole for simplified bump-steer adjustment
- Compatible brake kits: Strange, TBM, Wilwood 140-1033-BD, Aerospace (see notes)
Brake Kit / Bolt Size Notes
- Strange Brakes: Pre - Sept 2021 ? 3/8-24 thread; Current ? 7/16-14 thread
- TBM Brakes: Pre - Sept 2023 ? factory 8mm × 1.25; Current ? 3/8-24 thread
- Wilwood: 3/8-24 thread; requires trimming caliper bracket to use 2 of 3 bolts
- Aerospace: 3/8-16 thread; replace with 3/8-24 bolts for these spindles
- Aerospace kits without spacers require minor clearancing of both bracket & spindle
- TRZ recommends
. If unsure, 8mm can be drilled/tapped to match factory spindle modification.
Quick Specs
- Drop: 2?
- Material: 6061 billet aluminum
- Spindle Pins: 17-4 stainless, heat treated
- Steering Arms: Billet 6061 (Quick Steer optional)
- Caliper Bolt Thread: 8mm × 1.25 (this version)
- Total Weight: 11 lbs per pair
- Part Numbers: 328-61 & 303
Fitment
- 1978 Chevy Malibu
- 1979 Chevy Malibu
- 1980 Chevy Malibu
- 1981 Chevy Malibu
- 1982 Chevy Malibu
- 1983 Chevy Malibu
- 1984 Chevy Malibu
- 1985 Chevy Malibu
- 1986 Chevy Malibu
- 1987 Chevy Malibu
- 1988 Chevy Malibu
- 1982 Chevy S-10 / Blazer (2WD)
- 1983 Chevy S-10 / Blazer (2WD)
- 1984 Chevy S-10 / Blazer (2WD)
- 1985 Chevy S-10 / Blazer (2WD)
- 1986 Chevy S-10 / Blazer (2WD)
- 1987 Chevy S-10 / Blazer (2WD)
- 1988 Chevy S-10 / Blazer (2WD)
- 1989 Chevy S-10 / Blazer (2WD)
- 1990 Chevy S-10 / Blazer (2WD)
- 1991 Chevy S-10 / Blazer (2WD)
- 1992 Chevy S-10 / Blazer (2WD)
- 1993 Chevy S-10 / Blazer (2WD)
- 1994 Chevy S-10 / Blazer (2WD)
- 1995 Chevy S-10 / Blazer (2WD)
- 1996 Chevy S-10 / Blazer (2WD)
- 1997 Chevy S-10 / Blazer (2WD)
- 1998 Chevy S-10 / Blazer (2WD)
- 1999 Chevy S-10 / Blazer (2WD)
- 2000 Chevy S-10 / Blazer (2WD)
- 2001 Chevy S-10 / Blazer (2WD)
- 2002 Chevy S-10 / Blazer (2WD)
Frequently Asked Questions
Why do I need a bump-steer kit with these spindles?
The TRZ steering arms lengthen tie rods and use a straight 1/2? hole, which requires proper bump-steer adjustment to match lowered geometry.
How do I choose the correct caliper bolt size?
Physically measure your existing caliper bolt threads. Brake manufacturers changed thread sizes over the years, so measurement is far more reliable than assumptions.
Why Buy from Beefcake Racing?
Beefcake Racing offers genuine TRZ suspension components with expert fitment support and fast shipping. For help selecting steering arms, brake kit compatibility, or bump-steer components, contact us at sales@beefcakeracing.com or call 1-855-827-7223.
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