Online Catalogue

Triumph TF250 X

2024

Front Sprocket

Part Number: TBA

Teeth: 13

Available Sizes:

Rear Sprocket

Steel Rear Sprocket

Part Number: JTR897

Teeth: 48 Check Availability

Available Sizes: 38, 40, 41, 42, 43, 44, 45, 46, 47, 49, 50, 52, 53

Lightweight Self-Cleaning Rear Sprocket

Part Number: JTR897SC

Teeth: 48

Available Sizes: 40, 42, 43, 45, 48, 49, 50, 51, 52

Racelite Aluminium Rear Race Sprocket

Part Number: JTA897BLK

Teeth: 48

Available Sizes: 38, 40, 41, 42, 45, 47, 48, 49, 50, 51, 52

Drive Chain

Pitch: 520

Length: –

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

Teeth		Front Sprocket
Teeth		13
Rear Sprocket	40	3.08 -16.7%
	42	3.23 -12.5%
	43	3.31 -10.4%
	45	3.46 -6.2%
	48	3.69 standard
	49	3.77 +2.1%
	50	3.85 +4.2%
	51	3.92 +6.2%
	52	4.00 +8.3%

Lower gear ratios allow for higher top speeds.

Higher gear ratios increase torque for better acceleration.

Full Gear Ratio Chart (pdf)