Race Car Steering Components — Butterfly Wheels, Quick Release Hubs, Rack & Pinion, Spindles & More

The Chassis Shop has been building and supplying race car steering systems for decades. We carry an extensive selection of Pro-Werks and Stiletto steering components — everything from butterfly wheels to complete rack and pinion systems — so you can build a steering system that is seamless, precise, and race-ready. You can always count on Pro-Werks to do it right.

Butterfly Steering Wheels — Billet Aluminum, CNC Machined, Comfortable Grips

Pro-Werks billet aluminum butterfly steering wheels are the standard for drag racing. Unique contoured ergonomic finger grips, CNC machined with full-radius soft edges, and hidden lightening pockets make the Pro-Werks combo the lightest available. Measures 6-5/8" tall × 7-1/2" wide. Pre-drilled base compatible with Pro-Werks, Mark Williams, or Strange 4-bolt quick release hubs (.750" × 1.650" bolt pattern, 3/16" holes). Made in USA

• Butterfly Steering Wheel — 3 Base Finishes (Raw, Silver Anodized, Black Anodized), Drilled or Undrilled, Button Tabs Option, 4 Grip Colors — Pro-Werks Billet Aluminum Butterfly Steering Wheel  
• C2 Butterfly Steering Wheel — One-Piece Design, Multiple Button Locations, Raw Aluminum, Drilled or Undrilled, 4 Grip Colors — Pro-Werks C2 Billet Aluminum Butterfly Steering Wheel 
• Ergonomic Butterfly Wheel Grips — 4-Piece Aluminum Set, 4 Colors (Polished, Black, Red, Blue) — Pro-Werks Ergonomic Butterfly Wheel Grips with Hardware  — fits Pro-Werks butterfly wheel only
• Billet Aluminum Switch Panel Button Mount — Raw, Polished, or Black Anodized; Top & Face Plate Hole Options — Pro-Werks Billet Aluminum Switch Panel Button Mount — under 6.5 oz., Mushroom Button & Biondo Double-O compatible

Quick Release Steering Hubs — SFI 42.1 Certified

Precision CNC machined from 2024 aerospace grade aluminum. Spring-loaded trigger pin, one-finger operation, black anodized. SFI 42.1 certified — required by most sanctioning bodies. Each Steering hub assembly includes a 5/8" smooth bore hex adapter and fasteners. Made in USA

• 4-Bolt Quick Release Hub — 3/16" Holes, .750" × 1.650" Bolt Pattern, 2.66 oz., SFI 42.1 — Pro-Werks 4-Bolt Quick Release Steering Hub 
• 3-Bolt Quick Release Hub — 5/16" Holes, 3 on 1.750" Bolt Circle, 2.65 oz., SFI 42.1 — Pro-Werks 3-Bolt Quick Release Steering Hub 
• Undrilled Quick Release Hub — Round Flange 2.625" Dia., 3.53 oz., SFI 42.1 — Pro-Werks Undrilled Quick Release Steering Hub  
• Chromoly Adapter Stub — Fits 5/8" Hub Hex, Stepped End for 3/4", 7/8", or 1" Tube × .065" Wall — Pro-Werks Chromoly Adapter Stub
• Grant Wheel Adapter Flange — 5 on 2.835" Outer / 3 on 1.750" Inner, Fits C52-210 — Pro-Werks Grant Wheel Adapter Flange
• 9-Bolt Wheel Adapter Flange — 9 on 3.852" Outer / 3 on 1.750" Inner, Fits C52-210 — Pro-Werks 9-Bolt Wheel Adapter Flange
• Replacement Quick Release Hub Hex — 5/8" ID, Fits C52-210, C52-220, C52-230 — Pro-Werks Replacement Quick Release Steering Hub Hex

Steering Bearings, Shafts & Column Components

• Self-Lubricating Bearings — Pairs, 7 Sizes (5/8" to 1-1/4" ID), Nylon or Plastic, 1" Long —Pro-Werks Self-Lubricating Bearings, Pair
• Steering Bearing Kit — Self-Aligning Sealed Bearing, Up to 30° Misalignment, Polished Billet Cover & Hardware —Pro-Werks Steering Bearing Kit
• Billet Aluminum Steering Bearing Cover — Polished, Fits C73-080, C73-081, C73-082 —Pro-Werks Billet Aluminum Steering Bearing Cover
• Mild Steel Steering Bearing Weld Bracket — 5/16" Holes, 1/8" Thick, 3" Spacing —Pro-Werks Mild Steel Steering Bearing Weld Bracket
• Steering Shaft Kit, 5/8" — 48" & 72" Chromoly Tubes, 4-Bolt QR Hub (C52-220), Nylon Bushings, Bushing Sleeves, Dual Lock Splined Coupler, Anti-Push Back —Pro-Werks Steering Shaft Kit, 5/8" — final fitting and welding required
• Chromoly Steering Anti Push Back — 4130N, 5/8" or 3/4" Shaft, Pilot Drilled for Two-Piece Construction —Pro-Werks Chromoly Steering Anti Push Back — required by most sanctioning bodies

Roller Bearing Steering U-Joints — Zero Backlash, 32° Max Angle

Caged needle bearings, slight pre-load for zero backlash, pre-greased and sealed with hi-temp O-rings. Capable of 32° — for smoothest operation and longest life, it is recommended not to exceed 20°. Note: Stiletto 5/8-36 spline has a unique pressure angle and will not fit other OEM 5/8-36 splined components.

• 5/8-36 Spline × 3/4" Bored — Fits 6.4:1, 10:1, 12:1, 15:1 Stiletto Rack — Pro-Werks 5/8-36 Spline × 3/4" Bored Roller Bearing Steering U-Joint
• 9/16-26 Spline × 3/4" Bored — Fits Stiletto 20:1 Pro-Box, Gen 5 Small Box, Pinto OEM Rack — Pro-Werks 9/16-26 Spline × 3/4" Bored Roller Bearing Steering U-Joint
• Smooth Bore Both Ends — 5/8" or 3/4" ID — Pro-Werks Smooth Bore Roller Bearing Steering U-Joint

Stiletto Rack & Pinion Steering Systems

The "Swiss Watch" of rack and pinion — engineered and race track proven, precision crafted in the USA.

• 6.4:1 Fast Ratio Rack — Stiletto 6.4:1 Fast Ratio Rack N Pinion
• 10:1 Gen5 Small Box Dragster Rack — LH & RH Drive
• 12:1 Gen5 Small Box Dragster Rack
• 15:1 Gen5 Small Box Dragster Rack
• 20:1 Gen5 Small Box Dragster Rack & Gen2 Pro-Box — LH & RH Drive

Weld-On Splined Couplers — For Stiletto Rack & Pinion

• 5/8-36 Female Spline — Fits 6.4:1, 10:1, 12:1, 15:1 Stiletto Rack — Straight, Dual-Lock & Split-Bolt, 4130N or Mild Steel — 5/8-36 Female Spline Weld-On Coupler
• 9/16-26 Female Spline — Fits 20:1 Pro-Box, Gen 5 Small Box, Pinto OEM Rack — Dual-Lock or Split-Bolt, 4130N or Mild Steel — 9/16-26 Female Spline Weld-On Coupler

Tie Rods & Rack Mounts

• Chromoly Tie Rod Tube Kit — 3/4" Kit (2 × 18" Tubes + CM-6 Rod Ends) or 7/8" Kit (2 × 20" Tubes + CM-7 Rod Ends) — Pro-Werks Chromoly Tie Rod Tube Kit — final fitting and welding required

• Billet Aluminum Pinto Rack Mount Bracket — Silver Anodized, CNC Machined — Pro-Werks Billet Aluminum Pinto Rack Mount Bracket

Stiletto Chromoly Spindles & Front End Components

CNC machined and precision honed from heat-treated American produced 4130 chromoly forgings. Each spindle individually hardness tested and 100% Magnaflux inspected. 8620 king pins rifle drilled, hardened, precision centerless ground. PTFE impregnated bushings and thrust washers. ARP 12-point fasteners standard. Spindle diameter same as Early English Ford Anglia. King pin angle 8°. Accepts 0.984" ID inner bearing and 0.625" ID outer bearing. Made in USA

• Stiletto Chromoly Ultra Spindle Set — (2) Spindles, (2) 5" × 1/4" Arms, (2) Top Caps, (2) Bosses, (2) King Pins, (2) Thrust Washers, (2) Spindle Nuts, (2) Cotter Pins, (16) ARP Bolts —Stiletto Chromoly Ultra Spindle Set  
• Stiletto 4130N Chromoly Steering Arm — 1/4" Thick, Black Oxide, Engraved Length ID — Stiletto Spindle 4130N Chromoly Steering Arm
• Stiletto 4130N Chromoly Spindle Bosses — Pair, 1.250" OD × 0.687" ID × 2" Long — Stiletto Spindle 4130N Chromoly Bosses, Pair
• Billet Aluminum Tow Caps — Pair — (Stiletto), (Mark Williams), (P&S) — Pro-Werks Billet Aluminum Tow Caps

Stiletto Spindle Rebuild Parts

• Spindle Rebuild Kit — (2) King Pins, (2) Thrust Washers, (4) King Pin Bushings — Fits Stiletto Spindles After 1997 — Stiletto Spindle Rebuild Kit
• King Pin — 3.00" Long, 0.687" OD, Sold Each (Buy 2 for Full Rebuild) — Stiletto Spindle King Pin
• Thrust Washer — 0.687" ID, 0.095" Thick, PTFE, Sold Each (Buy 2 for Full Rebuild) — Stiletto Spindle Thrust Washer
• King Pin Bushing — 0.782" OD, 0.687" ID, PTFE, Sold Each (Buy 4 for Full Rebuild) — Stiletto Spindle King Pin Bushing
• Spindle Nut — 5/8-18 NF Thread, Forged Steel Castle Nut, Sold Each (Buy 2 for Full Rebuild) —Stiletto Spindle Nut

Front Axles, Weld-On Spindles & Wheel Hubs

• 4130N Chromoly Front Axle — 6 Configs: 36", 39", or 40" Wide; 6" Drop or Flat; Stiletto or SPE Bosses; 1-1/2" or 1-5/8" OD × .120" Wall —Pro-Werks 4130N Chromoly Front Axle — TIG welded, bosses at 8°
• Chromoly Three Bar Front End Kit — Tubing, Mounting Tabs, Inner Bosses, Grade 8 Hardware & Spindle Bosses — Pro-Werks Chromoly Three Bar Front End Kit, 4130N

• Billet Aluminum Anglia Wheel Hub — Black Anodized — C42-590 (Pre-Drilled: 5 on 4-1/2", 4-3/4", 5") or C42-591 (Undrilled, 6.450" Flange) — Pro-Werks Black Billet Aluminum Anglia Wheel Hub
• Chrome Dust Cap — Fits 2.047" Bore Wheels and C42-590 or C42-591 Hubs — Pro-Werks Chrome Dust Cap

Complete Your Steering Package

• Rod Ends — FK Bearing and Aurora heim joints for steering linkage connections
• Rod End Components — spacers, jam nuts, weld tabs, and hardware for steering linkage assembly
• Weld Tabs & Brackets — chassis tabs for steering column and rack mounting
• Tubing & Custom Bends — 4130N chromoly tubing for steering shaft and front end fabrication

Note: Welding should always be performed by a qualified welder.

Proudly Made in the USA.