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1969–72 K5 Blazer, first generation chassis

11 aftermarket chassis and subframes from 7 builders, compared with keeping and upgrading the original frame.

Art Morrison Enterprises, Frame-Werx, Motor City K5, Roadster Shop, Scott's Hotrods 'N Customs, Speedtech Performance, Total Cost Involved

Aftermarket chassis

Prices checked Oct 2, 2026

Compare Builder & product Type Front Rear Price
Original chassis Keep it and upgrade itFull ladder frame (open C-channel rails; shares the C/K pickup chassis) Factory 4WD: solid Dana 44 (or 10-bolt) on leaf springs; Saginaw recirculating-ball box. Some 1969-72 2WD versions had coil IFS Solid 10/12-bolt axle on leaf springs Kits from $4,294.94Cheapest kit in each area
Scott's Hotrods 'N Customs 1969-1972 K5 Blazer Chassis Full frame Scott's A-arm IFS, Aldan coilovers or air Equal-length parallel 4-bar, Moser 9in; Watt's opt. $14,750–$15,650 Coilover $14,750; SuperSlam $15,650 Source
Roadster Shop 1969-72 Blazer SPEC Full frame IFS, power rack & pinion, adjustable upper A-arm mounts Parallel 4-bar, Ford 9in, 31-spline $15,495 Base price (starting configuration, before options) Source
Frame-Werx Frame Werx Custom IFS Chassis for Classic 4X4 Chevys Fits 1967-91 Chevrolet K10 / K5 Blazer / Suburban (4x4) Full frame GMT900-based IFS and brakes 5-link $17,900 $17,900 or $6,000 deposit Source
Motor City K5 4wd Blazer Chassis, 69-72 Blazer Full frame Leaf-spring mounts fabricated Leaf-spring mounts $18,500 Bare steel frame; +$1,300 crate fee Source
Total Cost Involved 1969-1972 K5 Blazer Grounded Chassis Full frame Pro Touring IFS with airbags, tubular arms, R&P 4-link with Firestone airbags, Currie 9in $20,595 Sale price (was $22,883); 2WD air-ride chassis Source
Speedtech Performance 1969-1972 GM Truck Blazer Extreme Chassis Full frame ExtReme front, forged spindles, Sweet rack, coilovers Torque arm (IRS option listed) $24,999.95 Listed price Source
Roadster Shop 1969-72 Blazer Legend Series Full frame OEM GM (new Chevy 1500) 4x4 IFS, Fox 2.5 Factory adj coilovers, GM front diff, Silverado 13in discs Deaver custom leaf springs, Fox 2.0 Perf shocks, GM 12-bolt 3.42 posi, 12in discs $40,995 Category listing 'From/Base $40,995'; product page shows 'From $96,440' (configured incl… Source
Total Cost Involved 1969-1972 K5 Blazer Pro 4x4 Chassis Full frame Currie HP 44 solid axle, 4-link, Fox 2.5 remote-res coilovers, 12in travel Currie HP 60, 4-link, Fox coilovers, adj anti-squat $42,995 Complete 4x4 chassis with axles (4.56, Tru-Trac), RockJock steering, Fox shocks Source
Roadster Shop 1969-72 Blazer RS4 Full frame Solid axle: Currie Rock Jock HP Dana 44, Tru Trac, RS Fast Link 1.75in triangulated 4-bar, Fox 2.5 coilovers Solid axle: Currie Rock Jock HP Dana 60, Tru Trac, triangulated 4-bar, Fox 2.5 coilovers $44,995 Base price (starting configuration, before options) Source
Total Cost Involved 1969-1972 K5 Blazer Pro-Extreme 4x4 Chassis with 1 Ton Axles Full frame Currie Extreme 60 HP, 4-link, Fox 2.5 coilovers Currie Extreme 60, 40-spline, floater, E-Locker $50,995 Base price; site notes upgrades up to $14,000 more Source
Art Morrison Enterprises AME Offroad Chassis Fits 1967-91 Chevrolet/GMC pickup & Blazer (4x4) Full frame Not detailed (off-road/pre-runner geometry) Not detailed Quote only Source
Tick up to 4 to compare side by side.

Reading these prices

Starting prices aren't always comparable. Some include suspension, steering and brakes; some are a bare frame or front clip and the rest is extra. Check the Front and Rear columns and each product's notes before comparing totals. "Price on request" means the builder quotes each build. Confirm with the builder before you order, and send corrections through our contact page.

Upgrade the original chassis

How it's built
Full ladder frame (open C-channel rails; shares the C/K pickup chassis)
Front suspension
4WD: solid Dana 44 (or 10-bolt) on leaf springs; Saginaw recirculating-ball box. Some 1969-72 2WD versions had coil IFS
Rear suspension
Solid 10/12-bolt axle on leaf springs
Weak spots
The frame cracks at the steering box mount, and the front leafs ride harshly. Stock steering geometry is vague and binds when the truck is lifted or the axle articulates.

Stiffening the body or frame? We list 2 kits for this car, such as frame rails, subframe connectors and braces, on its Chassis stiffening page.

Suspension and steering kits for the original chassis

AreaKitWhat it doesPrice
Front suspension Rough Country 4in Lift Kit, 52in Rear Springs (73-76 K5) SKU 19530 Front and rear leafs, N3 shocks, raised steering arm $849.95 Rough Country list; 73-76 only Source
Front suspension TCI Engineering (Total Cost Involved) 1969-1991 K5 Blazer Pro Touring IFS Bolt-on crossmember IFS with Ridetech coilovers; street conversion that replaces the solid axle $6,395 Sale price (reg $7,106) Source
Rear suspension TCI Engineering (Total Cost Involved) 1973-1991 K5 Blazer/Jimmy 4-Link Rear Suspension 541-5100-00 Adjustable 4-link with Ridetech coilovers; lowered 2WD street use $2,895 Sale price (reg $3,217) Source
Steering Motor City K5 Crossover Steering System, 69-91 Blazer GK39GM Side-to-side drag link for Dana 44; needs flat-top knuckles $549.99 Motor City K5 list Source