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Robust Construction: Forged from premium 4130 chromoly steel, these oval track racing A-arms provide a whopping 40% more strength than conventional stock steel stamped arms., Convenient Design: Seamlessly bolts to your stock mounts, accepting stock type ball joints. The integration saves significant time and reduces additional expenses., Comprehensive Kit Details: Includes Speedway Left Side 8.5\" Upper Control Arm and Right Side 8\" Upper Control Arm, both featuring aluminum cross shafts. Two Speedway 1970-02 GM K5208 Style Upper Ball Joints are also part of the set., Sleek Appearance & Durability: Features a premium black painted finish complemented by greaseable steel bushings, ensuring longevity and an aesthetically pleasing look., Perfect Compatibility: Specifically crafted to fit 1978- GM Metric Stock Car Racing Upper Control Arms w/Ball Joint Kit Sku # 91605025 Mfr. Part # 91605025 Condition New Brand Speedway Motors Sold Kit Details
Kit Includes:
- (1) Speedway Left Side Chrome Moly Metric Upper Control Arm-Oval Track
- (1) Speedway Right Side Chrome Moly Metric Upper Control Arm-Oval Track
- (2) Speedway 1970-02 GM K5208 Style Upper Ball Joint
Speedway Side Chrome Moly Metric Upper Control Arm-Oval Track
These oval track racing A-arms are 40% stronger than the stock stamped steel arms. The A-arms bolt to your stock mounts and accept stock ball joints. These control arms have a 1/4\" thick steel plate where the ball joint bolts in. Fits 1978-87 mid-size GM Metric chassis.
- 4130 chromoly steel construction
- Aluminum cross shaft
- Bolts to stock 1978-87 Metric mounts (6-7/8\" center-to-center)
- Greaseable steel bushings
- Accepts stock K5208 style Metric ball joints
- Available for right (passenger side) or left (drivers side)
- Right arm length is 8\"
- Left arm length is 8.5\"
- Control Arm Style: Tubular
- Mount Center to Ball Joint Center: 8.50\"
- Mounting Bolt Center to Center: 6.875\"
- Material Type: Chromoly
- Bushing Material: Steel
- Ball Joint Type: Bolt-in
- Tube O.D.: 1.000\"
- Shaft Diameter: .726\"
Speedway 1970-02 GM K5208 Style Upper Ball Joint
These are factory replacement upper ball joints with OEM geometry. The upper bolt-in ball joint fits stock upper arms and our Metric tubular arms designed for racing use. For a 1/2\" raised pivot point upper, use 106-200322LF.
- Ball Joint Type: Bolt-in
- Degree of Taper: 10 degree
- Shank Length: 2.40\"
- Mounting Thread Length: 0.96\"
- Material Type: Steel
- Hardware Included: Yes
- Overall Height: 3.25\"
- Notes: This ball joint is equivalent to Moog K5208
- Position: Upper
Specs Mount Center to Ball Joint Center 8.50" Mounting Bolt Center to Center 6.88" Material Type Chromoly Cross Pin Material Aluminum Taper 10 ° Control Arm Style Tubular Position Front Upper Ball Joint Included Yes Ball Joint Type Bolt-in Bushing Material Delrin Control Arm Material Steel Hardware Included No Adjustable No Finish Painted Color Black Sold in Quantity Kit Tube O.D. 1" Shaft Diameter 0.726" MFG. Part # 91605025 Bushing Included Yes Reviews i have bought this product Rated by gtqb10 on May 28, 2025
Summary: will reorder this product each time i need parts.
Yes, I recommend this product.
I would buy again Rated by Drtrcr on December 24, 2024
Summary: Pure stock dirt race car
Yes, I recommend this product.
Buy this for more clearance Rated by S10 build on October 23, 2024
Summary: Tons of clearance for headers first gen s10 350 swapped would definitely recommend buying
I would definitely buy it again Rated by Walker on August 01, 2024
Summary: Fit great on my car! And easy to install
Yes, I recommend this product.
Love this Rated by Racer 6 on March 28, 2024
Summary: Love this product it fits the car so good
Yes, I recommend this product.
Related Items / Suggested Parts Lubrication Engineers 3752 LE Almagard Industrial Grease, 14.5 Oz Permatex® Anti-Seize Lubricant, 1 Fl. Oz Mobil 1 Synthetic Grease, 13.4 oz Replacement Front End Alignment Shim Assortment, Camaro/Nova/Chevelle Tech Support We\'re here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through Messaging and a knowledgeable Speedway Motors team member will be happy to help. About Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 74 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.
