15 Teeth Kawasaki Road BJ Estrella 250 A2,A3,C2 95-97 BJ Estrella 250 98-00 GPZ400 R (ZX400D) Japan GPX400 R (ZX400F) Japan ZR400 D1 Xanthus Japan ZXR400 H2,L1-L9 (ZX-4) 88-02 ZX-4 (ZX400G) Japan87-88 ZXR400 R (ZX400H1) Japan89-90 Suzuki Road RG400 EW <<< 520 Chain ConversionHK31AJapan87 SV400 Japan Yamaha Road YZF600R Thunder Cat <<< 520 Chain Conversion 96-03 YZF600R-T,V,W <<< 520 Chain Conversion 05-07 16 Teeth Kawasaki Road KLE400 A1-A4 Japan91-94 KLE400 A6 Japan99 ZR400 C1,C2,C3,C4 Zephyr Japan ZX400 C2 (Z400F2) 84-87 GPZ400 27PS 84-97 GPZ400 49PS 84-87 GPZ400 S (EX400A3,A4) Japan ZXR400 R (ZX400J1) Japan ZXR400 R (ZX400J2) Japan EN500 C1-C10 Vulcan 96-05 EN500 C6F,C7F,C8F,C9F Vulcan 500 Ltd 06-09 EN500 C1,C2 Classic France96-97 EX500 D6F,D7F,D8F,D9F Ninja 500R 06-09 GPZ500 S (EX500A1-A6) 87-93 GPZ500 S (EX500D1-D12) 94-05 KLE500 A1-A6 91-96 GPZ550 (ZX550A1-A6) Unitrack 84-92 ZR550 B2-B8 Zephyr 91-00 ZR550 B1-B4 Zephyr USA90-94 17 Teeth Kawasaki Road ER500 A1,A2,A3,A4,C1,C2,C3,C