Description
Steel Sprocket Derbi Senda DRD / X-Treme
Steel sprocket, 50 teeth, for 420 chains (standard), sturdy steel sprocket from Motoforce. It can be used either as a direct replacement for a damaged original sprocket or to change the gear ratio.
More Torque or Top Speed
The gear ratio plays a crucial role in tuning and has a significant impact on acceleration, overall performance, and top speed. A higher tooth count on the rear sprocket improves acceleration, delivering noticeably better pull from a standstill and in lower gears. Conversely, running a smaller tooth count allows for higher top speeds, which is ideal on long straights or for everyday road riding.
Compatibility
- Aprilia RX 50 from 2011
- Derbi Senda DRD before 2012 / DRD X-Treme from 2011 (not SM)
- Gilera RCR 50 from 2011
Sprockets with a 102mm inner diameter were not used very often 2012 and were mainly installed on Derbi DRD models. Starting in 2011, they were installed on the Derbi Senda X-Treme with 21"/18" tires, as well as on the Aprilia RX50 and Gilera RCR50.
Note: Since there may be different variants depending on the model year and model, please compare the dimensions and number of teeth on your sprocket with the image and the specifications. Here you’ll find the most common versions.
Details Derbi DRD Steel Sprocket
- Mounting: 6-hole 3x2
- Inner diameter: 102 mm
- Chain type: 420
- Teeth: 50
- Color: Silver
- Derbi OEM number: 2B004447
Funstion of Rear procket
The rear sprocket of a motorcycle is an essential part of the chain drive. It is mounted directly on the rear wheel and is connected to the front sprocket via a chain.
How can I tell if the sprocket is worn?
You can usually identify rear sprocket wear by inspecting the teeth. Worn teeth have an irregular shape and appear thin, very pointed or bent. You may also notice metallic rattling noises. Severe wear can cause the chain to skip because it slips over the excessively worn teeth.
smaller or larger Sprocket?
- Sprocket with more teeth → improved acceleration
- Sprocket with fewer teeth → higher top speed
You also have to consider the gear ratio between rear and front sprocket. The calculation is: number of teeth of rear sprocket / number of teeth of front spocket. A low ratio increases speed, while a high ratio improves acceleration.
Example: Front sprocket with 13 teeth and rear sprocket with 48 teeth: 48/13 = a ratio of 3.69.
Sprocket types
Steel is preferable to aluminium if you want the longest possible service life. Aluminium is the better choice for maximum performance because it is lighter. Self-cleaning anti-mud rear sprockets are suitable for off-road use in dirt and mud.
Chain care
To ensure optimal life, it is important that you do not neglect chain care, we recommend a special chain brush.
Overview of most common sprockets
- Sprocket, 62 mm internal diameter / 5-hole: Rieju (older models), Peugeot, Motorhispania
- Sprocket, 100 mm internal diameter / 4-hole: Beta RR50 from 2005
- Sprocket, 102 mm internal diameter / 6-hole 3x2: Derbi Senda DRD
- Sprocket, 105 mm internal diameter / 6-hole 3x2: Aprilia, Derbi, Gilera, Rieju, Peugeot, Motorhispania, Yamaha, MBK
- Sprocket, 108 mm internal diameter / 6-hole: Aprilia, Derbi, Gilera