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Chimera Engineering Honda GROM 12" Wheelset to Honda CB300R 2018+

Chimera Engineering Honda GROM 12" Wheelset to Honda CB300R 2018+


Regular price $399.99 USD
Regular price Sale price $399.99 USD
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Install Honda GROM 125 12" Wheel Set to a Honda CB300R  (2018+).  Converts your CB300R to a minimoto. This kit is complete and includes all Spacers and front caliper bracket to retain the stock Nissin Caliper.

Please note: Due to the clearance of the stock rear caliper, using the rear wheel from a pre 2022 will not be centered compared to a 2022+ rear Grom Wheel.  

Please specify what year GROM wheelset you will be using. The product photos are for reference only, different year kits selection will have different parts included. 


  • Honda CB300R  (2018- present)


  • Grom Wheels, Sprocket Carrier, Cush Drive Rubber
  • Grom Front Forks 2014-2020 NON-ABS
  • 2x Grom Front Rotors (220mm)
  • Grom rear sprocket to match the chain pitch and size (IE: 420, 428, 520)


  • The 2014-2020 and the 2022+ Sprocket Hub Carrier has different size mounting bolts for the sprocket. OG/SF Grom uses 8mm studs, RR/SP uses 10mm studs. If you have the RR/SP, you would need to drill the sprocket holes to 10mm. 
  • You would need to remove the existing OEM studs from the sprocket hub carrier to switch over to the included sprocket bolts. 
  • You will need to replace the rear rotor to a Front 220mm Rotor from a Grom.
  • ABS will NOT be retained. NON-ABS Rear Caliper Bracket would need to be shaved down for clearance.
  • Since the front brake caliper bracket is located on the outside of the forks, You will need to tap the fork legs to M10 x 1.5. We have the tap available here: TOOL-1007. Caliper mounting hardware is included.

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