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Ridetech, a leader in air and coil-over suspension systems for more than 30 years, proudly announces the launch of its MOMENTUM chassis kits. This all-new platform gives classic muscle car enthusiasts a clean-slate foundation for their next project—delivering modern handling, increased performance, and design flexibility beyond the limits of factory frames. Builders can now enjoy the benefits of a fully engineered chassis while tailoring the suspension to their preferred style of driving, whether that's comfortable street cruising, high-performance autocross, or full track use. Key engineering highlights include: * RideTech's MOMENTUM Chassis Series is a new platform for classic muscle cars, offering modern handling, optimized suspension, and modular options, initially for 1968-1972 models * Optimized suspension geometry—the chassis re-engineers pickup points to improve camber gain, caster, roll center, and Ackermann steering geometry * Enhanced stability—the chassis is significantly stiffer than a stock frame, which reduces flex and increases structural rigidity for more predictable handling * Improved cornering—a new integrated sway bar helps reduce body roll and improve balance, leading to sharper cornering and greater stability * Confidence-inspiring control—the design provides improved handling for both daily driving and more demanding situations like autocross or track events * Increased tire and wheel clearance—the chassis is engineered to accommodate larger, modern wheel and tire sizes that would not fit on a factory chassis * More aggressive fitment—allows for wider tires (e.g., up to 275mm front and 295mm rear) with room for larger fitments, especially when combined with mini tubs in the rear * Adjustable ride height—the system allows for roughly a 2-inch drop from stock but can be adjusted to the desired ride height * Kit offers modular suspension options that allow for air or coilover setups * Chassis is compatible with existing Ridetech A-body suspension components * Engine and transmission flexibility provides provisions for various motor mount plates (small block Chevy, Olds, Pontiac, Buick, GMLS, or Gen 5 LT) and features an adjustable crossmember that adapts to popular automatic and manual transmissions
Not Yet Reviewed
$19,500.00
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$19,650.00
Roadster Shop SPEC chassis kits offer Roadster Shop quality at an affordable price point. The SPEC Series is an engineering-focused approach, using the latest in manufacturing technology, to build the lightest, strongest, and easiest-to-install complete chassis systems. These technologies have been used to streamline procedures resulting in lower cost and shorter lead times. The SPEC independent front suspension is engineered to deliver outstanding performance in a user friendly package. It features proprietary suspension geometry designed to provide the best balance of ride quality and performance in its class. Available as On-The-Shelf, pre-configured chassis or custom specifications to suit your needs. Features and benefits of Roadster Shop SPEC chassis kits include: * Full-chassis performance at a smaller component price * Unparalleled quality * Add the strength of a full frame with no floor modifications on most applications * CNC laser-cut, TIG-welded, and contoured "Laser Rails" frame rails * No kinks, bends, or stressed areas that are prone to flex like mandrel-bent tubing * Stronger, lighter, and more precise * CNC-located factory mounts built into the frame for easy, vehicle specific installation * Frame rails accommodate mini-tubs and wider wheels * Aggressive ride heights for the modern pro-touring look * Choice of coilover or air suspension for many applications * Air suspension chassis will lay the rockers on the ground (varies with tire size) * Truck rear frame rail kick ups engineered for minimal bed modifications while allowing rockers to lie on the ground * Crossmembers and chassis bracing allow 3 in. exhaust * Adjustable, drop-out transmission mounts (tunnel mods may be necessary for larger T-56 and 4L80 transmissions) * Vehicle specific body (cab and bed on trucks), bumper, and core support mounts * Single-adjustable billet coilovers * Power rack and pinion steering * Easy-to-adjust upper A-arm eccentric mounts for fast and accurate alignments * Wilwood Pro Spindles * Parallel 4-bar rear suspension * Ford 9 in. housing with 31 spline axles * Optional mounts, coilovers, sway bars, brake packages, and rear-end gearing available on custom-order chassis * 5 x 4.75 wheel bolt pattern * Frames are shipped as bare steel
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$13,763.99
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$23,256.99
SPEC is an engineering focused approach using the latest in manufacturing technology to build the lightest, strongest, and easiest to install complete chassis system. These technologies have been used to streamline procedures, resulting in lower cost and shorter lead times. The SPEC independent front suspension is engineered to deliver outstanding performance wrapped up in user-friendly package. A completely new proprietary suspension geometry has been designed to provide the best balance of ride quality and performance in its class. Roadster Shop offers SPEC chassis kits for 1964-67 Chevelle models. Product benefits: * No kinks, bends or stressed areas that are prone to flex like mandrel bent tubing * Ability to contour to stock floors for a low-profile design. * Stronger, lighter, and more precise * CNC-located factory mounts built into the frame for easy, vehicle-specific installation * Frame rail designs to accommodate mini-tubs * Aggressive 7 in. ride height for the modern pro-touring look * 100 percent bolt-on application Standard features: * RS exclusive "Laser Rails" precision CNC laser-cut and contoured * Crossmembers and chassis bracing to allowing for 3 in. exhaust * Engine mounts for SBC, BBC, or optional LS & LT * Adjustable, drop out trans mount * Utlizes factory body, bumper, and core support mounts for a true bolt-on installation * SPEC IFS * RS SV by Fox fixed valve coilovers * Power rack and pinion steering * Easy-to-adjust upper A-arm eccentric mounts for fast and accurate alignments * Wilwood Pro Spindle * Parallel 4-Bar rear suspension * RS SV by Fox fixed valve coilovers * Ford 9 in. housing with 31 spline axles * Narrowed rear frame rails allow for wider rear tires when mini-tubbed
Not Yet Reviewed
$21,301.99
SPEC is an engineering focused approach using the latest in manufacturing technology to build the lightest, strongest, and easiest to install complete chassis system. These technologies have been used to streamline procedures, resulting in lower cost and shorter lead times. The SPEC independent front suspension is engineered to deliver outstanding performance wrapped up in user-friendly package. A completely new proprietary suspension geometry has been designed to provide the best balance of ride quality and performance in its class. Roadster Shop offers SPEC chassis kits for 1968-72 Chevelle models. Product benefits: * No kinks, bends or stressed areas that are prone to flex like mandrel bent tubing * Ability to contour to stock floors for a low-profile design. * Stronger, lighter, and more precise * CNC-located factory mounts built into the frame for easy, vehicle-specific installation * Frame rail designs to accommodate mini-tubs * Aggressive 7 in. ride height for the modern pro-touring look * 100 percent bolt-on application Standard features: * RS exclusive "Laser Rails" precision CNC laser-cut and contoured * Crossmembers and chassis bracing to allowing for 3 in. exhaust * Engine mounts for SBC, BBC, or optional LS & LT * Adjustable, drop out trans mount * Utlizes factory body, bumper, and core support mounts for a true bolt-on installation * SPEC IFS * RS SV by Fox fixed valve coilovers * Power rack and pinion steering * Easy-to-adjust upper A-arm eccentric mounts for fast and accurate alignments * Wilwood Pro Spindle * Parallel 4-Bar rear suspension * RS SV by Fox fixed valve coilovers * Ford 9 in. housing with 31 spline axles * Narrowed rear frame rails allow for wider rear tires when mini-tubbed
Not Yet Reviewed
$21,301.99
RJays Speed Shop offers complete perimeter frames for a variety of Ford cars and trucks from the 1920s, '30s, and '40s. The stamped steel frame rails are available with different options, like tubular center section, adjustable trans mount, crossmembers, suspension brackets, and more. These vintage chassis parts will assist in your restoration projects. Order the frame built for your vehicle.
Not Yet Reviewed
$5,174.99
RJays Speed Shop offers complete chassis kits for a variety of Ford Model A and street rod vehicles from the 1920s, '30s, and '40s. The full rolling chassis include numerous features like axles, brake system, manual or hydraulic power assist steering rack, and more. Options include full fenders or high boy chassis, front ends, brake kits, motor and transmission options, brake pedal, brake lines, rear suspension, and more. A vintage restoration begins with a solid foundation. Order the complete chassis kit designed for your classic car.
Not Yet Reviewed
$7,899.99
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$10,999.99
Heidts 1967-72 Chevy C-10 Complete Chassis Kits are the best bang for your buck, if you're looking to replace and upgrade your truck frame. 1967-72 Chevy C-10 complete chassis kit details: * Brand new 1967-72 C-10 frame * Heidts 1967-72 Superide independent front suspension * 1 1/4 in. upper and 1 1/2 in. lower tubular control arms * Front billet single adjustable coilover shocks with 450 lb. coil springs * 11 in. iron rotors with black 4-piston Wilwood calipers and GM bolt pattern * Power rack and pinion steering with 20:1 ratio and 3 Turn-to-Lock * Stock spindles * Heidts 1967-72 C-10 rear 4-link suspension * Rear billet adjustable coilover shocks with 300 lb. coil springs * 64 in. track housing with weld-on brackets and 31-spline axles
Not Yet Reviewed
$18,732.00
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$26,474.00
The ultimate in ride and handling has arrived for your Tri-Five Chevy. Upgrade your tired, worn-out frame for an all-new model from Heidts with the Tri-Five Complete Chassis Kits. Featuring the proven Heidts PRO-G independent front suspension, these frames are ready to handle the autocross or street. The patented high-horsepower IFS is incorporated into a new 10-gauge TIG-welded frame to provide a reliable and durable foundation for any build. Tri-Five complete chassis kit features: * Brand new, 10-gauge TIG-welded frame * PRO-G independent front suspension * 4-link rear complete suspension * Singe adjustable billet coilover shocks * 300 lb. spring rate * 1 1/4 in. front sway bar * Opel Power rack and pinion * Upper and lower control arms and hardware * 11 in. Wilwood brakes with smooth rotors and 4-piston black calipers * 9 in. Ford rear axle housing * Rear stabilizer bar
Not Yet Reviewed
$24,268.00
Heidts' 1932 Ford Complete Chassis Kits come loaded with their Superide® independent front suspension and 4-link rear suspension with housing and coilover shocks. Upgrade to the Superide II IFS with advanced geometry for the ultimate in ride quality! These kits include 11 in. rotors with Wilwood 4-piston calipers, tubular control arms, rack and pinion, adjustable coilovers, and a sway bar. 1932 Ford complete chassis kit details: * Brand new 1932 Ford frame * Tubular control arms * Front billet coilover shocks with 400 lb. coil springs * 11 in. iron rotors, Wilwood 4-piston polished calipers with Ford bolt pattern * Manual rack and pinion steering * Standard spindles * Sway bar * Triangulated rear suspension * Billet rear coilover shocks with 250 lb. coil springs * 32-40 Ford crossmember * 9 in. Ford axle housing with 31-spline axles
Not Yet Reviewed
$17,488.00
Heidts 1955-59 Chevy Truck Complete Chassis Kits come loaded with the Superide II independent front suspension and 4-link rear suspension with housing and coilover shocks. The IFS system out-handles the competition with advanced geometry for the ultimate in ride quality. Superide II kits include 11 in.; rotors with Wilwood 4-piston calipers; tubular control arms; power rack and pinion; adjustable coilovers; and a sway bar. 1955-59 Chevy truck complete chassis kit details: * Heidts Superide® II independent front suspension * Tubular control arms * 11 in. iron rotors, Wlwood 4-piston black brake calipers * GM bolt pattern * Front billet coilover shocks with 400 lb. coil springs * Power rack and pinion steering * Stock spindles * Sway bar * Rear 4-Link suspension with weld-on panhard bar mount * Rear coilover shocks with 300 lb. coil springs * 9 in. Ford axle housing with 31-spline axles
Not Yet Reviewed
$16,310.00
Heidts 1947-54 Chevy Truck Complete Chassis Kits come loaded with Heidts' Mustang II independent front suspension and 4-link rear suspension with housing and coilover shocks. The Mustang II suspension features tubular control arms, 11 in. rotors with single-piston GM calipers, stock or drop spindles, steering rack, and shocks and springs. 1947-54 Chevy truck complete chassis kit details: * Brand new 1947-54 Chevy truck frame * Complete Heidts Mustang II independent front suspension with manual rack and pinion * Tubular control arms compatible with coilover shocks * 11 in. solid iron brake rotors, with GM brake calipers and Chevy bolt pattern * Choice of front spring rate with stock shocks (300 lb., 350 lb., or 375 lb.) * Stock spindles * Sway bar * 4-link rear suspension * Rear black coilover shocks with 300 lb. coil springs * 9 in. Ford housing and 31-splin axles
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$14,637.00
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