GPz 1100, 1000J etc. - JT front sprocket options.

Approaching a chain and sprockets replacement on my 1100 and trying to decide whether I'll do a 530 conversion or not I spent some time with JT's online catalogue to research my options (I run a wider than stock rear wheel and will need an offset front sprocket).

I also want to change my gearing a bit for less cruising rpms so I'll likely go from stock 15/42 to either 15/39 or 15/38 (630) or 17/44 (530), which should change the ratio from stock 2.8 to around 2.55 - 2.6, does that sound about right?

Came up with the front sprockets listed below, they will all fit the Z-12 spline with various amount of offset - don't know if this is useful for anyone but me, but here it is anyway.

Btw, came across a few sprockets for 532 and 632 chains, anyone know if they'll work with 530/630 chains? And what does the last digit designate?


530 sprockets:




JTF 517 - available sizes: 15, 16, 17, 18

16:

GPZ750 R (ZX750 G2-G3) 85-88
ZR1100 A1-A4 Zephyr USA 92-95
ZR1100 A1-A4,B1 Zephyr 91-97

17:

GPZ900 R A1-A6 (ZX) Ninja 84-89
GPZ900 R A7-A12 (ZX) Ninja 90-96
ZX900 A1-A3 Ninja USA 84-86
ZX900 A1L Ninja USA 84
ZX1100 D1-D9 Ninja (ZX-11) USA 93-01
ZZ-R1100 (ZX1100 D1-D5) 93-97
ZZ-R1100 (ZX1100 D3-D6) France 95-98
ZZ-R1100 (ZX1100 D6-D7) 98-99
ZZ-R1100 (ZX1100 D8-D9) 00-01
ZX1200 C1-C4 Ninja (ZZ-R) USA 02-05
ZZ-R1200 (ZX1200 C1-C4) Ninja 02-05
ZX-14 (ZX1400 A6F,A7F,A8F) Ninja 06-08
ZX-14 (ZX1400 C9F,CAF,CBF) Ninja 09-11
ZX-14 (ZX1400 ECF,EDF,EDFA) Ninja 12-13
ZX-14 (ZX1400 FDF,FDFA) Ninja ABS 13
ZX-14 (ZZR-1400) USA 06-10
ZX-14 A6F/A7F/C8F/C9F/CAF/CBF Ninja (ZX1400) USA 06-11
ZX-14 ECF/ECFA/EDF/EDFA Ninja (ZX1400) USA 12-13
ZX-14 FDF/FDFA Ninja (ZX1400) ABS USA 13
ZZR1400 B6F,B7F,D8F,D9F,DAF,DBF 06-11
ZZR1400 ECF,FDF 06-11
ZZR1400 Performance 11-12
ZZR1400 Special Edition 13

18:

ZX-12R (ZX1200 A1,A2) Ninja 00-01
ZX-12R (ZX1200 B1,B2,B3,B4) Ninja 02-05
ZX1200 A1-A2 Ninja (ZX-12R) USA 00-01
ZX1200 B1-B4 Ninja (ZX-12R)




JTF527 - available sizes: 16, 17

17 T:

ZX10 (ZX1000 B1-B3) Tomcat ## <<530 Chain Conversion 88-90 (stock is 532)
ZX1000 B1-B3 Ninja (ZX 10) ## <<< 530 Chain Conversion (stock is 532)




JTF 528 - available sizes: 17

ZX1100 C1-C4 Ninja (ZX-11) USA 90-93
ZZ-R1100 (ZX1100 C1-C3) 90-92




JTF 1529 - available sizes: 17

GPZ1100 (ZX1100 F1 ABS) 96-98
GPZ1100 (ZX1100 E1-E3) 95-98
ZR1100 (ZRX1100 C1-C4,D1) 97-00
ZX1100 E1-E3 (GPz) USA 95-97
ZX1100 F1 (ABS) (GPz) USA 96
ZR1200 A1-A5 (ZRX 1200 R) USA 01-05
ZRX1200 01-04
ZRX1200 R (ZR1200 A1-A5) 01-06
ZRX1200 S (ZR1200S B1P,B2P,B3P) 01-06



630 sprockets:




JTF 522 - available sizes: 14, 15, 16

15 T:

KZ1000 J1-J3 USA 81-83
KZ1000 K1/K2 (LTD) USA 81-82
KZ1000 M1/M2 (CSR) USA 81-82
KZ1000 P1 Police USA82
KZ1000 P2-P20 Police USA 83-01
KZ1000 R1-R2 (Replica) USA 82-83
Z1000 J1-J3 81-82
Z1000 K1,K2, LTD 81-82
Z1000 R2 83
GPZ1100 (ZX1100 B1) 81
GPZ1100 (ZX1100 B2) 82
KZ1100 B1 (GPz) USA 81
KZ1100 B2 (GPz) USA 82
Z1100 R1 84-86




JTF 523 - available sizes: 15

GPZ1100 A1-A3 (ZX) Unitrack 83-85
ZX1100 A1-A2 (GPz) USA 83-84
ZX1100 A2L (GPz) USA 84




JTF 526 - available sizes: 15

GPZ1000 RX (ZX1000 A1-A3) ## <<630 Chain Conversion 86-89 (stock is 632)
ZX1000 A1-A2 Ninja (ZX 10) # <<< 630 Chain Conversion (stock is 632)

OnkelB wrote: ... Btw, came across a few sprockets for 532 and 632 chains, anyone know if they'll work with 530/630 chains? And what does the last digit designate?....

532 is 1/40" wider than 530.
632 is 1/40" wider than 630.

The math:

630
6 is 6/8" = 3/4" length pin to pin
30 = 3.0/8" = 3/8" width = 15/40"

632
6 is 6/8" = 3/4" length pin to pin
32 = 3.2/8" = 2/5" width = 16/40"

632 is 1/40" wider than 630

632 chain would fit onto 630 sprocket with 1/40" extra play.

A 630 chain might squeeze onto a 1/40" wider 632 sprocket, but would be a tight fit.
Whether too tight, I don't know.

Good Fortune!

www.gearingcommander.com is the website I use when changing sprocket ratio's.