RK transmission kit open chain MXU gold 120 links 520 black sprocket 50t racing pinion 13t
for HONDA CRF R 250
Check the compatibility with your motorcycle
FIND YOUR BIKE - compatibility table
-13%
Special Price €136.20 Regular Price €155.80Face every curve and straightaway with maximum power and precision thanks to our transmission kit, designed for riders who accept no compromises. This kit includes an RK chain, a JT sprocket, and a JT rear sprocket, all made to ensure high performance and exceptional durability.
The RK chain, with a pitch of 520 and a length of 120 links, features a UW-Ring O-Ring that ensures optimal lubrication and a tensile strength of 3400 kg. Its open design and gold color, both inside and out, not only provide an attractive look but also guarantee flawless functionality. With a constant pitch index of 600 and a clip closure, this chain is perfect for tackling the most challenging obstacles.
- RK Chain:
- Pitch: 520
- Length: 120 links
- O-Ring: UW-Ring
- Tensile strength: 3400 kg
- Design: open, gold color (inside and outside)
- Constant pitch index: 600
- Closure: clip
The JT rear sprocket, with an inner diameter of 125 mm and a PCD of 153 mm, is designed to fit your vehicle perfectly. With 50 teeth and a durable steel material, it offers quick response and unparalleled power transmission. The countersunk bolts and a bolt hole diameter of 8.5 mm ensure a secure and stable attachment.
- JT Rear Sprocket:
- Inner diameter: 125 mm
- PCD: 153 mm
- Teeth: 50
- Material: durable steel
- Attachment: countersunk bolts
- Bolt hole diameter: 8.5 mm
Completing the kit is the JT sprocket, a racing component that leaves nothing to chance. With 17 teeth and a small spline attachment, this sprocket is designed to maximize acceleration and speed. Its width of 9.5 mm and variable inner diameter between 21.2 mm and 23.8 mm make it versatile and compatible with various configurations.
- JT Sprocket:
- Teeth: 17
- Attachment: small spline
- Width: 9.5 mm
- Inner diameter: variable between 21.2 mm and 23.8 mm
| Links | 120 |
|---|---|
| Pitch | 520 |
| Chain | Open |
| Chain Type | MXU |
| Chain Color | Gold |
| Crown Color | Black |
| Crown Teeth | 50 |
| Crown Inner Diameter | 125 mm |
| Hole spacing | 153 mm |
| Pinion teeth | 13 |
| Pinion Type | Racing |
| Pinion Diameter | 21/23.8 mm |
| Pinion Coupler | Small |








