CSI RS-23ST 4/5 Standard RR 7" Non-Adj Twin Tube Engine 5" and 5-1/2" spread

5" and 5-1/2" spread

Measures 1-1/2" wider than the standard 69 tire

Hyper Racing # 02-360

Fits Hyper 600cc and Lightning Sprint Chassis

CSI RS-23ST 4/5 Standard RR 7" Non-Adj Twin Tube Engine 5" and 5-1/2" spreadHyper Racing # 388 118 Several new design elements make the RS 23ST a must have for the upcoming season. CSI has completely re designed the base valve assembly resulting in a more robust and repeatable unit. In addition, they have lightened the body cap, upgraded the shaft seal, and improved the piston selection. New base valve design allows for low gas pressure in the gas chamber, drop it down to 10 PSI without worry of cavitation. Body: 6061 T6