Gold [Example of converted vehicle for public roads]
[Honda] ・NSR80=104L / Ape 100=104L / NSF100=100L / Grom=106L
[Kawasaki] ・KSR110=100L / Z125PRO=100L
※415 Requires sprocket change to size.
The L number is a reference value of the genuine length.
Specified displacement: Road race 2-stroke = ~125cc
・Road race 4-stroke = ~250cc (single is ~300cc)
*Cannot be used in endurance races)
・Public road use = 50cc~125cc
*Conversion from 428 size is not possible


The GC415HRU will be released for use in the JP250 class race, which has been gaining popularity in recent years, and for converting from the 420 non-seal chain used in Grom, Z125PRO, etc. - The durability of the seal has been improved compared to the old model (GB) by polishing and plating the inner and outer plates.・A caulking joint (CLF) with excellent safety has been installed to cope with harsh races. -Can be used in a wide range of applications, from 50cc-based hobby races to J-GP3 and Moto3.・It is now possible to convert vehicles using 125cc and 420 size such as Grom and Z125PRO. Experience improved rear wheel output without sacrificing durability or breaking strength. Precautions for use - Installation on the vehicle should be performed by a mechanic with advanced technology and knowledge. - Vehicles whose output and displacement have been increased through modification etc. cannot be guaranteed even if the displacement is within the specified displacement.・Please perform maintenance by applying oil compatible with your chain every 500km. Safety Warning Requires 415 size sprocket. Read more


Manufacturer: ‎RK
Brand: ‎RK EXCEL
Model name: ‎GC415HRU-110L
Package size: ‎26 x 9.6 x 2.3 cm; 810 g
Product model number: ‎GC415HRU-110L
Product weight: ‎810 g