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Stiletto Steering Race Car Rack and Pinion units, Steering Couplers, Steering U-Joints, and Accessories

The 'Swiss Watch' of Race Car Rack and Pinions - trusted by Champions in all types of racing since 1973. Find the perfect combination for your application.

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Stiletto fast ratio rack and pinion steering assembly, 6.4:1 ratio, billet aluminum center housing with black bellows boots and rod ends at both ends Stiletto rack and pinion steering assembly with billet aluminum housing, black bellows boots and rod ends, badged 6.4:1 ratio, 11-1/4 inch width

6.4:1 Ratio, Stiletto Fast Ratio Rack N Pinion, 11-1/4 Inch Width

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Stiletto Gen5 small box dragster rack and pinion, 10:1 ratio, black anodized housing with black bellows boots and rod ends at each side Stiletto Gen5 small box dragster rack and pinion, 10:1 ratio, with black bellows boots, splined center pinion shaft and silver rod ends at each end

10:1 Ratio, Stiletto Gen5 Small Box Dragster Rack and Pinion

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Stiletto Gen5 small box dragster rack and pinion, 10:1 ratio, black anodized housing with black bellows boots and rod ends at each side Stiletto Gen5 small box dragster rack and pinion, 12:1 ratio, with black bellows boots, splined center pinion shaft and silver rod ends at each end

12:1 Ratio, Stiletto Gen5 Small Box Dragster Rack and Pinion

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Stiletto Gen5 small box dragster rack and pinion, 10:1 ratio, black anodized housing with black bellows boots and rod ends at each side Stiletto Gen5 small box dragster rack and pinion, 15:1 ratio, with black bellows boots, splined center pinion shaft and silver rod ends at each end

15:1 Ratio, Stiletto Gen5 Small Box Dragster Rack and Pinion

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Video title frame showing a dimly lit Stiletto rack and pinion assembly behind overlaid text reading 'Geometric Accuracy 5.0 Microns' Stiletto Gen5 small box dragster rack and pinion, 20:1 ratio, with black bellows boots, splined center pinion shaft and silver rod ends at each end

20:1 Ratio, Stiletto Gen5 Small Box Dragster Rack and Pinion

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Stiletto Gen2 Pro-Box rack and pinion with rack and pinion boot, 20:1 ratio, left-hand drive, with 4130N chromoly tube housing Stiletto 20:1 ratio rack and pinion steering unit, left-hand drive, with 4130N chromoly tube, black bellows boots and clamp mounting brackets

20:1 Ratio, Stiletto Gen2 Pro-Box Rack N Pinion, LH Drive

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Stiletto Gen2 Pro-Box rack and pinion assembly, 20:1 ratio, 4130N chromoly rack tube with black bellows boots at both ends, right-hand drive Stiletto rack and pinion steering assembly, 20:1 ratio, with 4130N chromoly tube, black accordion boots at each end and mounting brackets

20:1 Ratio, Stiletto Gen2 Pro-Box Rack N Pinion, RH Drive

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Stiletto Dwarf Mod-Lite rack and pinion, 10:1 ratio, left-hand drive, billet aluminum housing with 4130N chromoly rack and black bellows boots at each end Stiletto rack and pinion with 10:1 ratio badge, silver billet aluminum body, 4130N chromoly rack and black bellows boots

10:1 Ratio, Stiletto Dwarf Mod-Lite Rack N Pinion, LH Drive, 15-1/2 Inch Width

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Stiletto dwarf mod-lite rack and pinion with 10:1 ratio, billet aluminum housing, 4130N chromoly rack and black bellows boots, right-hand drive Stiletto rack and pinion with billet aluminum body, 4130N chromoly rack and black rubber boots at each end, marked with a 10:1 ratio badge

10:1 Ratio, Stiletto Dwarf Mod-Lite Rack N Pinion, RH Drive, 15-1/2 Inch Width

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Close-up of Pro-Werks steel steering U-joint with 5/8-36 splined bore and 3/4 inch bored end, showing two set screw holes in the yoke Pro-Werks roller bearing steering u-joint rod ends, splined end with set screws and 3/4 inch bored end, machined alloy steel

Pro-werks 5/8-36 Spline X 3/4 Inch Bored Roller Bearing Steering U-Joint

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Stiletto weld on bung for splined steering coupler, angled view showing 5/8-36 female spline socket and 3/4 inch bore Three Stiletto weld-on steering couplers with 5/8-36 female splined bores, two fitted with pinch-bolt clamp hardware

5/8-36 Female Spline, Weld On Coupler, fits 6.4:1, 10:1, 12:1, 15:1 Stiletto Rack-n-Pinion

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Close-up of Pro-Werks steel steering U-joint with 9/16-26 splined bore and 3/4 inch bored end, showing two set screw holes in the yoke Pro-Werks roller bearing steering u-joint rod ends, splined end with set screws and 3/4 inch bored end, machined alloy steel

Pro-werks 9/16-26 Spline X 3/4 Inch Bored Roller Bearing Steering U-Joint

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Steel Stiletto weld on bung with 9/16-26 female splined bore and two clamp hex bolts through the slotted body Pair of Stiletto weld-on steering couplers with 9/16-26 female splined bore, pinch-bolt clamp with hex bolt and lock nut

9/16-26 Female Spline, Weld On Coupler, fits 20:1 Stiletto Rack-n-Pinion

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Close-up of a Pro-Werks machined steel steering U-joint, showing the smooth bored end and machined body Pro-Werks roller bearing steering U-joint with clevis rod end, machined alloy steel with smooth 5/8 in bores on both ends and set screws

Pro-werks Smooth Bored Both Ends, Roller Bearing Steering U-Joint

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Dimensioned drawing of a Stiletto 4130N chromoly steel rack-and-pinion weld bracket, trapezoidal tab with two holes: 3.5 in. base, 1.25 in. tall, 0.125 in. thick Stiletto rack-and-pinion weld gusset in 4130N chromoly, flat trapezoidal plate with two 3/8 inch holes and a U-shaped cutout, shown from two angles

1/8 Inch Thick, 3/8 Inch Holes, 4130N Chromoly Rack-n-Pinion Weld Bracket, Stiletto

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Pro-Werks 4130N chromoly tie rod tube kit with two black tubes, two clevis rod ends, two clevis brackets and two bolts with nuts

Pro-werks Chromoly Tie Rod Tube Kit, 4130N

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Stiletto replacement kit: two ribbed neoprene-nylon woven boots with threaded bores, 1-3/4 inch OD, plus a bundle of coiled wires Black woven neoprene Stiletto Steering rack boots shown in four pairs of increasing diameter on a white background, from Stiletto

Stiletto Replacement Boot and Wire Kit

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White jar of Stiletto assembly lube labeled RACK LUBE, with a coil of thin metal rack and pinion boot wires beside it

Stiletto Service Lube For Rack N Pinions

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Stiletto 4130N chromoly spindle forging, unmachined single piece shown at a three-quarter angle Pair of Stiletto 4130N chromoly ultra spindles in black finish, with bolted machined caps, tapered spindle pins and flat steering arms

Stiletto Chromoly Ultra Spindle Set

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Pro-Werks billet aluminum tow cap with machined lift eye and four socket-head bolts, shown installed on a black spindle Pair of Pro-Werks billet aluminum spindle tow caps, each with a large center bore, four small bolt holes and an outer eye hole

Pro-werks Billet Aluminum Tow Caps, Pair

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Black oxide 4130N chromoly Stiletto steering arm, angled view showing five mounting holes and engraved length mark Stiletto steering arm in black oxide 4130N chromoly steel, with five mounting holes and an engraved length identification marking

Stiletto Spindle 4130N Chromoly Steering Arm

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Stiletto spindle king pin with 0.687 inch outside diameter, showing rifle-drilled bore and set screw flat Stiletto spindle rebuild kit laid out: two steel king pins, four king pin bushings and two thrust washers

Stiletto Spindle Rebuild Kit

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Dimensioned drawing of Stiletto king pin bushing in top and side views: 0.782 in outside diameter, 0.687 in inside diameter, 0.427 in length Stiletto spindle king pin bushing, plain metal sleeve with 0.782 inch outside diameter and 0.687 inch inside diameter

Stiletto Spindle King Pin Bushing, 0.782 Inch Outside Diameter, 0.687 Inch Inside Diameter

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Dimensioned drawing of Stiletto spindle thrust washer, 0.687 in. inside diameter and 1.25 in. outside diameter, shown face-on and in profile at 0.095 in. thick Stiletto spindle thrust washer, a flat black metal washer with a large center bore, shown at an angle on a plain white background

Stiletto Spindle Thrust Washer

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Dimensioned drawing of a Stiletto spindle car king pin, side view marked 3.0 in. long with an end view circle marked 0.687 in. outside diameter Stiletto spindle king pin with 0.687 inch outside diameter, showing rifle-drilled bore and set screw flat

Stiletto Spindle King Pin, 3.00 Inch Long, 0.687 Inch Outside Diameter

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Stiletto forged steel castle nut with slotted crown and internal threads, shown from above on a white background

Stiletto Spindle Nut

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Stiletto Drag Race Rack and Pinion Steering Systems

Stiletto Steering Systems are engineered for drivers who demand precision. Purpose-built rack and pinion steering units for drag racing, oval track, dirt, and road course applications — delivering smooth, responsive steering with the durability to handle the rigors of competitive racing. Trusted by racing champions at every level of motorsports since 1973.

As the manufacturer of Stiletto Steering — the "Swiss Watch" race car rack and pinion — The Chassis Shop brings you factory-direct service, expert support, and the full lineup of components to complete your steering system.

 

Gen5 Small Box Dragster Rack & Pinion — 4 Ratio Options

The 5th Generation Gen5 Small Box features ultra tough 2024-T4 billet aluminum housing, sub-harmonic stress relief, anodized components, precision grease-sealed ball bearings, durable nylon interwoven neoprene boots, heat-treated chromoly rack and pinion gear (exceeds AGMA specs), black oxide conversion coating, and silicon-bronze bushings with proprietary Stiletto Lube. Rear or front steer flexibility. Standardized pinion gear location allows ratio changeover. Rack travel per steering wheel rotation: 10:1 = 3.141", 12:1 = 2.618", 15:1 = 2.094", 20:1 = 1.570".

 

6.4:1 Fast Ratio Rack & Pinion — It's Fast

The fastest steering response in the Stiletto lineup. The Magnum Housing design is 35% stronger than its previous design, CNC machined out of Ultra tough 2024-T4 billet aluminum, heat-treated alloy rack, FEA engineered. 11-1/4" width, 4.625" total rack travel, 1.00 turn lock to lock. 5/8-36 spline pinion. Vertical and horizontal tie rod attachment options, rear or front steer flexibility.

 

Gen2 Pro-Box Rack & Pinion — 20:1 Ratio, Full-Bodied Vehicles

Designed for drag racing's full-bodied door car vehicle categories — popular in Pro-Mod and Pro-Stock categories. 2024-T4 aircraft billet aluminum, heat-treated chromoly rack, ball bearing mounted pinion. 5" total rack travel, 3-1/4 turns lock to lock, super lightweight — weighs only 5.25 lbs. complete.

 

Dwarf / Mod-Lite Rack & Pinion — 10:1 Ratio, 15-1/2" Width

Compact and heavy-duty, machined from aircraft billet aluminum with chromoly rack and aluminum clevises for tie rod attachment. Smooth action with near-zero backlash. Front steer application. 5/8-36 splined pinion, 1/2" clevis holes.

 

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

Precision machined alloy steel bodies with caged needle bearings and slight pre-load for zero backlash. Pre-greased and sealed with hi-temp O-rings. Capable of 32° operating angle — 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.

 

Weld-On Splined Couplers — For Stiletto Rack & Pinion

Splines precision broached to correct Stiletto profile and size. Stiletto's proprietary spline will not fit other manufacturers' couplers.

  • 5/8-36 Female Spline — Fits 6.4:1, 10:1, 12:1, 15:1 Stiletto Rack — Straight, Dual-Lock & Split-Bolt Styles, 4130N or Mild Steel, 5/8" or 3/4" Bore — 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, 3/4" Bore — 9/16-26 Female Spline Weld-On Coupler

 

Tie Rod Tube Kit

  • 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, 4130N  — for use with rack-and-pinion outfitted with rod ends, final fitting and welding required

 

Stiletto Chromoly Ultra Spindle Set

CNC machined and precision honed from heat-treated American produced 4130 chromoly forging. Each spindle individually hardness tested and 100% non-destructive 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.

 

Service & Maintenance Parts

  • Stiletto Replacement Boot & Wire Kit — 6 Sizes: Small Box 8-1/2"/9" (8 peaks), Small Box/Fast Ratio 11-1/2" (11 peaks), Small Box 12-3/4" (14 peaks), Small Box 14-1/4" (15 peaks), Pro-Box (11 peaks), Dwarf/Mod-Lite (9 peaks) — Stiletto Replacement Boot and Wire Kit — includes 2 boots and 4 wires
  • Stiletto Service Lube — Specially Formulated Assembly Lube & Boot Wires, Fits All Stiletto Rack-N-Pinions — Stiletto Service Lube For Rack N Pinions

 

Complete Your Steering System

  • Steering Components — butterfly wheels, quick release hubs, U-joints, spindles, and front end components
  • Rod Ends — FK Bearing and Aurora heim joints for steering linkage connections
  • Cables & Cable Hardware — throttle and fuel shutoff cables for complete cockpit control

Proudly Made in the USA.

Annotated photo of a Stiletto Steering rack and pinion steering unit with black bellows boots, billet housing and rod ends, callouts naming its features

Dare to Compare

The Stiletto Gen5 Small Box rack-n-pinion is engineered for superior performance and longevity.

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Stiletto Steering Systems

Over fifty years ago a legend was born. Stiletto Steering Systems is the industry standard for race car steering. Stiletto rack-n-pinion steering boxes are the gold standard benchmark of driving control.

The wide selection of purpose-built Stiletto steering boxes are known for their smooth "Swiss Watch" movement, ease of use and unparalleled durability.

We’re not going to tell you how it works or all the finite steps required to produce a product of this caliber—just know that Stiletto Steering Systems continue to win more races than any other and bring drivers home for the next pass.

So, if you are looking for the smoothest operating, safest, most proven steering rack and components you are in the right place. Expect nothing less than near perfection from the team at Pro-Werks.

Built with out compromise in the USA.

How to Determine Steering Ratio

The overall ratio (steering response) of a steering system is determined by the degree of the movement of the front wheels in relation to one turn of the pinion gear (or steering wheel). Example: One turn of the steering wheel (360º) divided by 30º tire movement would have an overall ratio of 12 to 1 (360/30).

This overall ratio is a result of two factors; the distance of the rack travel created by one turn of the pinion gear and the length of the spindle arm that the tie rod connects to. It's important to note that a shorter steering arm will result in faster steering response rate and the overall ratio ends up smaller numerically, and a longer arm will result in slower steering response rate and the overall ratio ends up larger numerically.

For comparison purposes, the overall ratios that we list are calculated using a spindle arm length of 5 inches. This length reference is measured from the center of the spindle king pin axis to the center of the mounting hole for the tie rod.

Also note that a larger (or smaller) steering wheel diameter will effect the driver input requirement and feedback, as well as influencing the overall steering system response speed.

Rack Travel

6.4 : 1  has 4.625” of rack travel in 1 rotation of steering wheel
10 : 1  has 3.141” of rack travel in 1 rotation of steering wheel
12 : 1  has 2.618” of rack travel in 1 rotation of steering wheel
15 : 1  has 2.094” of rack travel in 1 rotation of steering wheel
20 : 1  has 1.570” of rack travel in 1 rotation of steering wheel

The Art of Making Stiletto Steering
Kalitta Air top fuel dragster staged on the start line at an NHRA drag strip with crew members along the wall

Trusted By Champions

★★★★★

"We've updated all our teams Top Fuel chassis with the latest Gen 5 Stiletto Small Box Rack-n-Pinion. Our drivers appreciate how smooth and easy the cars react. Stiletto is the best in the business."

Brian Husen, Crew Chief
Kalitta Motorsports

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