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  • Front Sprocket 420 - Derbi D50B0

Front Sprocket 420 - Derbi D50B0


From: £3.95
Select an Option
  • 11 Teeth£4.05In Stock
  • 12 Teeth£6.95In Stock
  • 13 Teeth£6.95In Stock
  • 14 Teeth£3.95In Stock
  • 15 Teeth£6.95In Stock
  • 16 Teeth£6.95In Stock
  • 17 Teeth£4.65In Stock
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Front drive sprocket for Derib D50B0/ D50B1 engines produced upto 2018.

For 420 chain.

*Available in 7 different sizes

16t & 17t are oversized.

For engines produced after 2018 (Euro4) you will need a sprocket retainer for engines produced before 2018.

These no longer have the smaller retainer holes, you will need a larger type sprocket retainer!


  • Aprilia RS50 2006 on (Derbi D50B engine)
  • Derbi 50cc geared with D50B0 engine (05 on)
  • Aprilia RS4 50 (D50B)
  • Aprilia RX50 (D50B)
  • Aprilia RX50 Euro4 (D50B)