Before purchase, every Speedtech Chassis configuration is reviewed by our team to confirm fitment, performance goals, and upgrade compatibility.
Create your build to receive expert validation and final pricing, or share your build goals with a Speedtech specialist to get a custom recommendation.
While Pro Touring traditionally emphasizes maximum performance and track capability, our Extreme Street Chassis series is engineered with a different priority—real-world drivability. Designed specifically for classic GM trucks like C10s and Squarebodies, this platform transforms rugged, utilitarian workhorses into refined, confidence-inspiring street machines.
Built around our Extreme Chassis architecture and paired with a Torque Arm rear suspension, this system delivers a balanced combination of ride quality, traction, and control. Modern suspension geometry smooths out rough roads, improves stability, and enhances overall predictability behind the wheel—whether you're cruising through town or putting down miles on the highway.
By blending proven performance engineering with the unmistakable character of C10 and Squarebody trucks, this classic truck chassis upgrade provides a clean, composed driving experience without sacrificing the classic look. The result is a purpose-built foundation that feels just as at home on a long road trip as it does on your daily drive.
ExtReme Chassis with Torque Arm Rear Suspension Includes:
More brake options available from using the first generation Camaro tall spindle
Isolated road noise from using polyurethane bushings
Adjustable rebound with QA1 ultra Ride Shocks
High torsional stiffness from internal frame gusseting
bolts to stock body mounts with no modification to the floor pan
great road feel and tight turning radius with the Sweet Mfg. dual piston rack and pinion steering
Proven torque arm rear suspension
better load transfer during acceleration and braking
less binding than a 4-link and perfect for the street
Engineered for high power with a 9" housing and 31 spline acles
Personalized stance with front and rear ride height adjustment
bed floor will need to be modified
Tech Info
Chassis Upgrades and Optional Add-ons:
Frame mounted battery box
Coyote, LS, LT, Hemi or Viper Engine and adapter plates
Urethane engine and transmission mounts
Stainless steel 1 7/8″ headers for most engines
Stainless-Steel double joint steering shaft kit
Splined adjustable 3 piece rear sway bar
Rear end center section with your choice of final drive ratio
Aluminum Third Member with your choice of gears
Brake packages from Baer or Wilwood with or without E Brake
Full Floater 9″ rear axle
Ididit tilt steering column*
Stainless-Steel Rick's fuel tank with pump options
Wheels and Tires
Note: Oil pan compatibility with chassis is specific and the pan will need to fit around the steering rack. Ask your sale person for a recommendation.
Chassis orders will be confirmed over the phone. A sales person will call you for a no cost consultation to discuss the specific details of your project and ensure you are provided with the very best customer experience.
*Factory steering columns have the incorrect length and will not work with the ExtReme suspension components. We recommend an Ididit steering column for best results. Please speak to your salesperson to order from us or to obtain the correct part number.
Note: All chassis orders will have a $900 crating fee plus truck freight shipping added on at the time of processing. These chassis can only be delivered to a shipping terminal or a business with a loading dock and/or forklift access.
Be sure to ask your sales rep about these different options to customize your frame to your needs.
