Rock Box Chassis Rail
A fully enclosed box chassis rail system with cam based chain tensioners.
Constructed from 4"x3"x.125"wall aluminum tube. Each assembly features a 1/2" keyed input shaft.
Each outside axle is a custom cut d-shaped bolt. A cam washer on each end allows for precision chain tensioning.
1/8" Rocker is built into the wheel mount design.
This Kit Includes:
1 - Rock Box Side Rail, 37" or 27"
2 - 1/2" Cam Bolt Assemblies
1 - 1/2" Keyed Input Shaft
2 - 1/2" ID Flanged Ball Bearings
Please choose either 37" or 27" length. Wheel spacers and related accessories are currently not available for this product. Custom solutions are available.
NOTE: Use of a SuperShifter Adapter Kit requires custom modification to the side rail. Please contact us if you wish to add these features for a small charge.
Weight: 6.2 lbs.
Files
Rock Box 37" Assembly Drawing.pdf
Rock Box 37" Assembly.step
Rock Box 27" Assembly.step
Rock Box 27" Assembly Drawing.pdf
Accessories
| Cam Bolt Assembly Use this cam bolt set and matching reaction plates to create a sliding tensioner shaft. These are the same components used in the Rock Box Chassis system. $25.00 | Andymark FIRST Wheel, 2008![]() The classic FIRST wheel manufactured by Andymark.biz. $7.00 |
Andymark Plaction Wheel, 6" Wedgetop![]() Molded polycarbonate, 6 inch diameter traction wheel with wedgetop tread. $29.00 | AM SuperShifter Adapter Kit Use this kit to add Andymark SuperShifters to your Universal Chassis or Rock Box. $380.00 Custom Options Available |





