JT JTR251 Rear Sprocket – 520 Pitch

JT JTR251 Rear Sprocket – Pitch 520

JT rear sprocket. The vehicle compatibility list below has been taken from the official JT Sprockets Application Guide 2024.

Technical Specifications

• JT Part Number / Fitment: JTR251
• Fitting Position: Rear
• Chain Pitch: 520
• Teeth available to select in shop: 46, 50

Compatible with – official JT vehicle list

Important regarding tooth selection: The JT fitment number describes the compatible mounting. The Application Guide also indicates the number of teeth with which the respective vehicle is factory-equipped. A different number of teeth offered within the same fitment family will change the gear ratio and may differ from the standard factory gearing.

38 teeth according to JT Application Guide

• Honda XR250 Tornado Brazil (250 cc) – Year of manufacture not specified in JT Guide – Chain 520, 104 links

47 teeth according to JT Application Guide

• Yamaha WR250 F-Z, A, B, D, E 5UMV/1HC (250 cc) – Year 10-14 – Chain 520, 114 links
• Yamaha WR450 F-Z, A 5TJV, 1HB Europe (450 cc) – Year 10-11 – Chain 520, 114 links
• Yamaha WR450 F-B, D, E, F, G 1DX Europe (450 cc) – Year 12-16 – Chain 520, 114 links

48 teeth according to JT Application Guide

• Yamaha YZ125 L, M, N (125 cc) – Year 99-01 – Chain 520, 112 links
• Yamaha YZ125 T, V, W, X, Y, Z, A1, B, D2, E2, F2, G2, H2, J2, K2 (125 cc) – Year 05-19 – Chain 520, 112 links
• Yamaha YZ125 L2, M2 (125 cc) – Year 20-21 – Chain 520, 112 links
• Yamaha YZ250 F-N, P, R, S (4-Stroke) (250 cc) – Year 01-04 – Chain 520, 112 links
• Yamaha YZ426 F-M, N, P (426 cc) – Year 00-02 – Chain 520, 114 links
• Yamaha YZ450 F-R, S 5XD2 (450 cc) – Year 03-04 – Chain 520, 114 links
• Yamaha YZ450 F-F, G, H, J, K 1SL (450 cc) – Year 15-19 – Chain 520, 114 links
• Yamaha YZ450 F-G 60th Anniversary Edition (450 cc) – Year 16 – Chain 520, 114 links
• Yamaha YZ450 F-B, D USA (450 cc) – Year 12-13 – Chain 520, 114 links
• Yamaha YZ450 F-F, G, H, J USA (450 cc) – Year 15-18 – Chain 520, 114 links

49 teeth according to JT Application Guide

• Yamaha YZ125 P, R, S 5XE2 (125 cc) – Year 02-04 – Chain 520, 112 links
• Yamaha YZ125 N2L (125 cc) – Year 22 – Chain 520, 112 links
• Yamaha YZ125 P2L (125 cc) – Year 23 – Chain 520, 112 links
• Yamaha YZ125 RL (125 cc) – Year 24 – Chain 520, 112 links
• Yamaha YZ125 RSE 50th Anniversary Ed. (125 cc) – Year 24 – Chain 520, 112 links
• Yamaha TT-R230 T, V, W, X, Y, Z, A, B, D, E, F, G, H, J, K, L (230 cc) – Year 05-20 – Chain 520, 106 links
• Yamaha TT-R230 M, N, P (230 cc) – Year 21-23 – Chain 520, 106 links
• Yamaha TT-R230 R (230 cc) – Year 24 – Chain 520, 106 links
• Yamaha YZ250 P, R, S (250 cc) – Year 02-04 – Chain 520, 114 links
• Yamaha YZ250 F-T, V, W, X, Y (4-Stroke) (250 cc) – Year 05-09 – Chain 520, 112 links
• Yamaha YZ250 F-Z, A 17D5 USA (250 cc) – Year 11 – Chain 520, 112 links
• Yamaha YZ400 F-L (400 cc) – Year 99 – Chain 520, 114 links
• Yamaha YZ450 33D (450 cc) – Year 07-14 – Chain 520, 114 links
• Yamaha YZ450 F-L, M (450 cc) – Year 20-21 – Chain 520, 114 links
• Yamaha YZ450 F-N (450 cc) – Year 22 – Chain 520, 114 links
• Yamaha YZ450 F-P (450 cc) – Year 23 – Chain 520, 114 links
• Yamaha YZ450 F-R (450 cc) – Year 24 – Chain 520, 114 links
• Yamaha YZ450 F-RSE 50th Anniversary Ed. (450 cc) – Year 24 – Chain 520, 114 links
• Yamaha YZ450 F-MME Monster (450 cc) – Year 21 – Chain 520, 114 links
• Yamaha YZ450 F-NME Monster (450 cc) – Year 22 – Chain 520, 114 links
• Yamaha YZ450 F-PME Monster (450 cc) – Year 23 – Chain 520, 114 links
• Yamaha YZ450 F-E USA (450 cc) – Year 14 – Chain 520, 114 links
• Yamaha YZ450 F-K, L, M USA (450 cc) – Year 19-21 – Chain 520, 114 links
• Yamaha YZ450 F-NL, P2L, RL USA (450 cc) – Year 22-24 – Chain 520, 114 links
• Yamaha YZ450 FMME Monster USA (450 cc) – Year 21 – Chain 520, 114 links
• Yamaha YZ450 FNME Monster USA (450 cc) – Year 22 – Chain 520, 114 links
• Yamaha YZ450 FPME Monster USA (450 cc) – Year 22 – Chain 520, 114 links

50 teeth according to JT Application Guide

• Yamaha YZ125 X-L, M (125 cc) – Year 20-21 – Chain 520, 114 links
• Yamaha YZ125 X-L, N, P (125 cc) – Year 22-23 – Chain 520, 114 links
• Yamaha YZ125 X-R (125 cc) – Year 24 – Chain 520, 114 links
• Yamaha WR250 F-L, M (250 cc) – Year 99-00 – Chain 520, 114 links
• Yamaha WR250 FN (Enduro Version) (250 cc) – Year 01 – Chain 520, 114 links
• Yamaha WR250 F-W, X, Y, Z (Off 5UMU/W (250 cc) – Year 07-10 – Chain 520, 114 links
• Yamaha WR250 F-F, G, H, J, K, L 2GB (250 cc) – Year 15-20 – Chain 520, 114 links
• Yamaha WR250 F-A, B, D, E, F, G, H, J (Off Road USA (250 cc) – Year 11-19 – Chain 520, 114 links
• Yamaha YZ250 L, M, N (250 cc) – Year 99-01 – Chain 520, 114 links
• Yamaha YZ250 R, S USA (250 cc) – Year 03-04 – Chain 520, 114 links
• Yamaha YZ250 T, V, W, X, Y, Z, A1, B1, D2, E2, F2, G2, H2, J2, K2 (250 cc) – Year 05-19 – Chain 520, 114 links
• Yamaha YZ250 L2, M2 (250 cc) – Year 20-21 – Chain 520, 114 links
• Yamaha YZ250 N2 (250 cc) – Year 22 – Chain 520, 114 links
• Yamaha YZ250 N2ME Monster (250 cc) – Year 22 – Chain 520, 114 links
• Yamaha YZ250 P2 (250 cc) – Year 23 – Chain 520, 114 links
• Yamaha YZ250 R (250 cc) – Year 24 – Chain 520, 114 links
• Yamaha YZ250 RSE 50th Anniversary Edition (250 cc) – Year 24 – Chain 520, 114 links
• Yamaha YZ250 F-E, F, G, H, J, K, L, M 1SM (250 cc) – Year 14-21 – Chain 520, 114 links
• Yamaha YZ250 F-N, P (4-Stroke) (250 cc) – Year 22-23 – Chain 520, 114 links
• Yamaha YZ250 F-R (250 cc) – Year 24 – Chain 520, 114 links
• Yamaha YZ250 F-RSE 50th Anniversary Edition (250 cc) – Year 24 – Chain 520, 114 links
• Yamaha YZ250 F-G 60th Anniversary Edition (250 cc) – Year 16 – Chain 520, 114 links
• Yamaha YZ250 F-B, D, E, F, G, H, K, L, M USA (250 cc) – Year 12-21 – Chain 520, 114 links
• Yamaha YZ250 F-NL, P2L, RL USA (250 cc) – Year 22-24 – Chain 520, 114 links
• Yamaha YZ250 FMME Monster (250 cc) – Year 21 – Chain 520, 114 links
• Yamaha YZ250 FNME Monster (250 cc) – Year 22 – Chain 520, 114 links
• Yamaha YZ250 X-G, H, J, K, L, M USA (250 cc) – Year 16-21 – Chain 520, 114 links
• Yamaha YZ250 X-N, P USA (250 cc) – Year 22-23 – Chain 520, 114 links
• Yamaha YZ250 X-R (250 cc) – Year 24 – Chain 520, 114 links
• Yamaha WR400 F-L, M, N (400 cc) – Year 99-01 – Chain 520, 114 links
• Yamaha WR426 F-N, P (426 cc) – Year 01-02 – Chain 520, 114 links
• Yamaha WR450 F-R, S, T, V 5TJ6 (450 cc) – Year 03-06 – Chain 520, 114 links
• Yamaha WR450 F-W, X, Y (450 cc) – Year 07-09 – Chain 520, 114 links
• Yamaha WR450 5TJU/W USA (450 cc) – Year 10-19 – Chain 520, 114 links
• Yamaha WR450 F-L USA (450 cc) – Year 20 – Chain 520, 114 links
• Yamaha WR450 F-M (450 cc) – Year 21 – Chain 520, 114 links
• Yamaha WR450 F-N, P (450 cc) – Year 22-23 – Chain 520, 114 links
• Yamaha WR450 F-R (450 cc) – Year 24 – Chain 520, 114 links
• Yamaha YZ450 FX-G, H, J, K, L1, M (450 cc) – Year 16-21 – Chain 520, 114 links
• Yamaha YZ450 FX-N, P (450 cc) – Year 22-23 – Chain 520, 114 links
• Yamaha YZ450 FX-R (450 cc) – Year 24 – Chain 520, 114 links

51 teeth according to JT Application Guide

• Yamaha WR250 F-M, N, P (Off Road Version) (250 cc) – Year 21-23 – Chain 520, 114 links
• Yamaha WR250 F-R (Off Road Version) (250 cc) – Year 24 – Chain 520, 114 links
• Yamaha WR250 F-L (Off Road Version) USA (250 cc) – Year 20 – Chain 520, 114 links
• Yamaha WR250 F-M, N, P, R (Off Road USA (250 cc) – Year 21-24 – Chain 520, 114 links
• Yamaha YZ250 F-Z, A, B, D 17D6/7/8 (250 cc) – Year 10-13 – Chain 520, 114 links
• Yamaha YZ250 FX-F, G, H, J, K, L1, M USA (250 cc) – Year 15-21 – Chain 520, 114 links
• Yamaha YZ250 FX-N, P USA (250 cc) – Year 22-23 – Chain 520, 114 links
• Yamaha YZ250 FX-R (250 cc) – Year 24 – Chain 520, 114 links
• Yamaha YZ450 F-T, V (450 cc) – Year 05-06 – Chain 520, 114 links

52 teeth according to JT Application Guide

• Yamaha WR250 F-N, P, R, S, T, V 5UM6 (250 cc) – Year 01-06 – Chain 520, 114 links

Installation and Gearing Note

• Check model, year, chain pitch, and desired number of teeth before ordering.
• A different number of teeth changes the gear ratio and may require a different chain length or an adjustment of the chain tension.
• Carry out assembly and tightening torques according to the vehicle manufacturer's specifications.