JConcepts Stadium Truck Tire Inner Sidewall Support Adaptor
JConcepts Stadium Truck Tire Inner Sidewall Support Adaptor

JConcepts Stadium Truck Tire Inner Sidewall Support Adaptor

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Your Price: $13.60
Part Number: JCO2966
Availability: In Stock.

Continuing development is critical to performance and the team at JConcepts have developed a new option for tire sidewall support. During high traction or loaded conditions, tire sidewall deflection causes oversteer and inconsistency with driving performance. By adding the inner sidewall support adaptor and gluing it into place, the sidewall effectively becomes much harder and allows a driver to enter smoother arcs and radius turns on the race track. Already used in competition, the sidewall support pieces have shown to work on glued, sealed, or naturally grippy surfaces where traction rolling or oversteer is an issue. In addition, when conditions are rough, bumpy or dusty, the additional support drives smoother and with more consistency.


At the ROAR Nationals, Dakotah Phend, in conjunction with the JConcepts race team, installed the adaptors into the Smoothie 2 tires and Phend TQ’ed and won the 2wd and 4wd modified classes in convincing fashion. On the glued track surface, the supports were added only to the inside of the outer sidewall and tack glued into place. The ultimate option to a massive array of tires gives JConcepts users an advantage and a larger setup window to tune in to any surface. JConcepts, established in 2003, is truly World Proven Innovation and Design.



  • Precise, fit and finish shaped to stadium truck tire carcass
  • Rubber material, bonds easily with glue
  • Interlocking features to align inside tire body
  • 4 pieces included per package

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