JT Sprockets

Online Catalogue

Honda XR250 RT,RV,RW,RX,RY,R-1,R-2,R-3,R-4

1996 to 2004

Front Sprocket

Steel Front Sprocket

Part Number: JTF1321

Teeth: 13

Available Sizes: 12, 13, 14

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR210

Teeth: 48

Available Sizes: 38, 39, 40, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 55

Aluminium Rear Race Sprocket

Part Number: JTA210

Teeth: 48

Available Sizes: 40, 42, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53

Drive Chain

Pitch: 520

Length: 106

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
121314
Rear Sprocket383.17
-14.2%
2.92
-20.8%
2.71
-26.5%
393.25
-12.0%
3.00
-18.8%
2.79
-24.6%
403.33
-9.7%
3.08
-16.7%
2.86
-22.6%
423.50
-5.2%
3.23
-12.5%
3.00
-18.8%
433.58
-3.0%
3.31
-10.4%
3.07
-16.8%
443.67
-0.7%
3.38
-8.3%
3.14
-14.9%
453.75
+1.6%
3.46
-6.2%
3.21
-12.9%
463.83
+3.8%
3.54
-4.2%
3.29
-11.0%
473.92
+6.1%
3.62
-2.1%
3.36
-9.1%
484.00
+8.3%
3.69
standard
3.43
-7.1%
494.08
+10.6%
3.77
+2.1%
3.50
-5.2%
504.17
+12.8%
3.85
+4.2%
3.57
-3.3%
514.25
+15.1%
3.92
+6.2%
3.64
-1.3%
524.33
+17.4%
4.00
+8.3%
3.71
+0.6%
534.42
+19.6%
4.08
+10.4%
3.79
+2.5%
554.58
+24.1%
4.23
+14.6%
3.93
+6.4%

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)