ICE Roller Coaster (IRC) Type II Chain Tensioner for 20mm Frame and 15/10mm Axle

  IRC (‘’ICE Roller Coaster’’) is a BMX Race chain tensioner,proudly designed by ICE This innovation was designed in France to solve* recurring problems that Riders have been facing for many years (hard point on chain, tension problems and chainring change   itch the riders are confronted since many years. (Hard point, chain tension or chainring changes )The IRC chain tentioner is a product to be taken as a whole and it consists of 2 parts :Part A  horizontal part  « classic » chain tensionner.Part B  vertical part  Swing arm with pulley. The Swingarm cannot be mounted on a different chain testioner than Part A. However, Part A can be mounted without part B. ICE wanted to be able to offer this system to the majority of riders, and therefore release dit in 2 different versions, to make it adaptable to as many frames as possible :IRC type l : FOR traditional Ø15 or Ø10 mm frame dropouts (see picture), to mount wheels with Ø15 or 10mm axle when using the 15-10mm adapters supplied with