CBR Swap 428 Sprocket Kit | Honda Grom & Monkey | Silver & Gold Chain

Unlock the power your CBR-swapped Honda Grom or Monkey has been hiding. This 428 Conversion Sprocket Kit by WickedGrom lets you ditch the restrictive stock CBR/CB 520 chain setup and run a lighter, more efficient 428 drivetrain — the same spec trusted by mini-moto racers and performance street builds alike.

Optimized gear ratios let you fine-tune acceleration vs. top speed for your specific riding style. Choose from silver or gold 428 chain, and dial in your front (15T, 16T, or 17T) and rear (32T, 33T, or 34T) sprocket sizes to match your engine swap and power curve. Compatible with 2014–2020 and 2022+ Honda Grom and Monkey platforms.

Kit Includes:

• Front sprocket (15T, 16T, or 17T — your choice)
• Rear sprocket (32T, 33T, or 34T — your choice)
• 428 chain in Silver or Gold (2014–2020 or 2022+ fitment)

Why Upgrade to 428?

• Lighter and more efficient than the stock 520 chain setup
• Reclaim power lost through the heavier OEM drivetrain
• More sprocket ratio options for aggressive tuning
• Direct bolt-on for CBR-swapped Grom and Monkey builds
• Available in silver or gold chain to match your build aesthetic

Compatibility: Honda Grom & Monkey with CBR/CB engine swap | 2014–2020 and 2022+ | 428 chain pitch

Vendor: WickedGrom