Replacement Leaf Spring for 1969 Bock Dragstar Race Car Hauler
Updated 10/30/2025 | Published 10/14/2025
Question:
Rebuilding a vintage 1969 Bock Dragstar race car hauler. Previous owner said he upgraded to 3500 lb. axles in the 1970s. Axle tubes measure 2.375inch diameter. Current springs are 4 leaf slipper style, 26 1/2inch to 26 5/8inch eye to end of spring. Leaf thickness is .375. Am thinking about replacing the springs since the trailer has gone countless miles traveling to dragstrips across country for many years. Would you recommend SP-230275 springs as a replacement?
asked by: Rick S
(click to enlarge)
Expert Reply:
Hey Rick, yes based on what you described the replacement slipper spring part # SP-230275 would be the correct replacement that would work well. It's for a 4k axle and it has the same length you need.
That's a sweet race car! I don't know Mopars that well so I am not sure exactly what it is but it's a great looking muscle car!
Product Page this Question was Asked From
4-Leaf Slipper Spring w/ Hook End for 4,000-lb Trailer Axles - 26-5/8" Long
- Trailer Leaf Springs
- Slipper Springs
- 9/16 Inch Eye
- Nylon Bushings
- 4000 lbs
- 2 Inch Wide
- 4 Leaf
- 26-5/8 Inch Long
- Standard Grade
- Universal Group
more information >
Continue Researching
- Shop: Rubber Gasket for 4" Round, Flange Mount Lights - Black
- Shop: Curt Class 5 Universal Weld-on Hitch w/ Brackets - 2" Receiver - 44" Wide
- Shop: Stromberg Carlson Adjustable Accessory Hitch Receiver - 49-1/2" to 76-1/2" Wide - 2"
- Shop: Buyers Products Class 5 Service Body Hitch Receiver - 2"
- Shop: Buyers Products Class 5 Service Body Hitch Receiver - 2-1/2"
- Shop: Curt Front Mount Trailer Hitch Receiver - Custom Fit - 2"
- Article: Trailer Wiring Diagrams
- Shop: Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Search Results: trailer hitch
- Shop: Trailer Wiring
- Q&A: Best Suspension Upgrade for 33" Tandem Axles: Road Armor vs Dexter EZ Flex for Ember 22ETS
- Search Results: trailer wiring
- Video: Measuring To Choose The Right Trailer Axle
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: How to Measure for Trailer Hitch Drop
- Q&A: Can I Use Heavier Rated Leaf Springs on Trailer Without Causing Damage
- Search Results: trailer tires and wheels
- Q&A: How to Replace a Lance 6-Pin Plug w/ a Standard 7-Way Connector
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Search Results: trailer jack
- Shop: Brake Controller
- Q&A: What is the Difference Between the MORryde CRE3000 and AllTrek 4000 Suspension Kits
- Article: How to Measure Your Trailer Wheel Bolt Pattern
- Search Results: trailer leaf springs
- Q&A: Lift Kit Solution to Allow Fifth Wheel Trailer to Sit More Level When Towed
- Article: 5 Things to Know About Weight Distribution Hitches
- Video: In-Depth Look at the B&W 5th Wheel to Gooseneck Pin Box
- Search Results: trailer lights
- Q&A: Reason Why Furrion Chill Cube w/ Heat Pump Isn't Backwards Compatible With 2024 And Earlier Systems
on Trailer Leaf Springs
Jameson C.
10/30/2025
Hey Rick, how did the new slipper springs work out on your vintage Dragstar hauler? Your update could make it easier for others restoring older race trailers.