67-69 GM F & 68-74 X-Body Extreme Subframe

Speedtech Performance

SKU
11231
$9,968.00
Estimated Shipping Date: Sep 23, 2026
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The Speedtech ExtReme front subframe delivers an all-new take on geometry and quality for your 67-69 Camaro and 68-74 Nova, giving you wide tire fitment, maximized rigidity, and serious handling performance — whether on the track or the street. Engineered with proprietary geometry and tuned with QA1 or JRi coilovers and a precision dual-power rack from Sweet Mfg., the system provides predictable, connected feedback with a refined ride quality that doesn’t compromise drivability. 

Optimized suspension geometry, forged aluminum spindles, and clearance for up to 315mm front tires ensure every aspect is engineered for real-world performance. 

67-69 Extreme Front Geometry

AGGRESSIVE STANCE, WIDE TIRE FITMENT 

Designed with wide wheel and tire combos in mind, this subframe accommodates up to a 315/30/18 tire with full steering clearance. High-clearance control arms and optimized geometry let you slam the car for that strong pro-touring look without compromising performance or drivability. 

PRECISION STEERING FEEL, DUAL RACK PERFORMANCE 

At the heart of this system is a dual power rack and pinion from Sweet Mfg., giving you a quicker ratio and improved feedback for confident cornering. Combined with our billet steering arm and ExtReme spindle geometry, you’ll feel in full control at every turn. 

RACE-BRED STRENGTH, STREET-READY RELIABILITY 

Box-welded construction with tabbed-through gusseting maximizes torsional rigidity, while our 7075 forged aluminum spindles bring lightweight strength to the front end. It’s engineered to take abuse—on and off the track. 

BINDLESS REAR END SUSPENSION

Torque Arm Rear Suspension, teamed with articulating trailing arms, is designed to articulate fully through the motion of your suspension travel, giving you better handling and a higher quality ride.

MADE IN THE USA WITH PRIDE 

Every Speedtech subframe is built right here in the USA, using premium materials and expert craftsmanship. We believe in building it right the first time—with no compromises. 

BOLT-ON INSTALLATION, NO GUESSWORK 

This isn’t a weld-in or cut-up job. The ExtReme subframe bolts directly to the stock location, making installation straightforward for builders, pros, or advanced DIYers. Transmission crossmembers are fully adjustable to accommodate just about any engine/trans combo you throw at it. 

Tech Info

FREQUENTLY ASKED QUESTIONS (FAQ’s)

IS A SPEEDTECH EXTREME FRONT SUBFRAME SUITABLE FOR STREET AND TRACK USE?

Absolutely. The ExtReme front subframe is engineered with track-proven geometry that delivers precise handling and control on the track while maintaining excellent ride quality for street driving. It’s ideal for pro-touring builds, autocross, and aggressive street use.

WHAT SIZE TIRES CAN I RUN WITH THE EXTREME FRONT SUBFRAME?

The system is designed to maximize front tire fitment, supporting up to 315-width tires (depending on wheel offset and vehicle application) while maintaining full steering articulation and clearance.

WHAT ENGINES AND TRANSMISSIONS WILL FIT THIS SUBFRAME?

The modular engine mounting system supports GM: LS, LT, SBC, BBC, Ford: SB, BB, Coyote and Mopar: SB, BB, Gen 3 Hemi. It’s designed to integrate seamlessly with a wide range of transmissions when paired with compatible crossmembers. (Note Pontiac engines may not fit)

WHAT MAKES THE SPEEDTECH FRONT SUBFRAME DIFFERENT FROM OTHERS?

It features optimized suspension geometry for improved camber gain, reduced bumpsteer, and enhanced steering response. Combined with lightweight, high-strength construction and precision components, it delivers modern sports car handling in a classic platform.

WHAT’S INCLUDED WITH THE EXTREME FRONT SUBFRAME?

  • ExtReme Front Subframe Assembly
  • Front Upper and Lower Control Arms
  • Forged Spindles with C7 Hubs
  • Steering Arms and Tie Rods
  • Front Three Piece Sway Bar and Linkage
  • Engine Mounting System
  • Coilovers (if option chosen)
  • Sweet Mfg. Steering Rack
  • Applicable Hardware