JT Sprockets

Online Catalogue

Aprilia 250 RS

1995 to 2004

Front Sprocket

Steel Front Sprocket

Part Number: JTF436

Teeth: 14

Available Sizes: 13, 14, 15, 16

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR28

Teeth: 42

Available Sizes: 42, 43

Aluminium Rear Race Sprocket

Part Number: JTA28

Teeth: 42 Check Availability

Available Sizes:

Racelite Aluminium Rear Race Sprocket

Part Number: JTA28BLK

Teeth: 42

Available Sizes: 41, 42, 43, 44

Drive Chain

Pitch: 520

Length: 110

Please note that the chain shown in this listing is for size reference only. For the correct chain type and grade, please refer to the vehicle's manufacturer manual.

Gear Ratio Chart

TeethFront Sprocket
14
Rear Sprocket412.93
-2.4%
423.00
standard
433.07
+2.4%
443.14
+4.8%

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)