Many of the ratios of these kits are very close to each other and only differ by a few mph at most. We offer different ratios for those who want to combine their gearset with a specific final drive or have a specific horsepower output and configuration. Do not stress yourself out over what kit to choose. Once one of these kits are acquired, the final drive is a more crucial choice.
GX-HO-B-CR1
Road race close kit #1
1st, 3rd, 4th, 5th
Road race close kit #1 1st , 3rd, 4th and 5th. Suitable for mild to full race B18c-B20 with 4.4 or 4.7 final depending on course. Linear ratio changes between gears. 1st 3.07 [ 2nd OEM 2.105] 3rd 1.652 4th 1.296 5th 1.000. Kit consists of seven gears
GX-HO-B-CR2
Road race close kit #2
1st, 3rd, 4th, 5th
Suitable for all B series applications .4.2, 4.4 0r 4.7
Particularly good for circuits with tight 2nd-3rd gear corners
1st 3.07 [ 2nd OEM 2.105] 3rd 1.695 4th 1.296 5th 1.000
Kit consists of seven gears
GX-HO-B-CR3
Road race close kit #3
1st 3rd 4th 5th
Suitable for mild B16 and B18c with 4.4 , 4,2
Slightly shorter 5th for smaller tracks
1st 3.07 [2nd OEM 2.105] 3rd 1.652 4th 1.296 5th 1.033
Kit consists of seven gears
GX-HO-B-CR4
Fast Road /Track day
1st, 3rd, 4th, 5th
Suitable for mild to full B16 and mild B18 with 4.4 or 4.7
2nd, 3rd, 4th close with slightly wider gap to 5th than in road race kit #1 and #2
1st 3.07 [2nd OEM 2.105] 3rd 1.695 4th 1.386 5th 1.000
Kit consists of seven gears
GX-HO-B-CR5
Ultra close race #1
1st, 3rd, 4th 5th
Suitable for modified B16a and B18c short course racing and drag with 4.2, 4.4 or 4.7 final
1st 3.07 [2nd OEM 2.105] 3rd 1.695 4th 1.385 5th 1.033
Kit consists of seven gears
GX HO B CR6
Ultra close race #2
1st, 3rd, 4th, 5th
Suitable for full race B16a, B18c where very close ratio applications are required, such as
road and gravel rallying. Sprints, hill climbs or Road race with a tall final [4.00]
1st 3.07 [ 2nd OEM 2.105] 3rd 1.652 4th 1.385 5th 1.21
Kit consists of seven gears
Note: If you race where they have rolling starts and first gear is not used, we have kit GX-HO-B-CR1B which does not have a first gear. This kit is composed of a 3rd, 4th, and 5th gear. Suitable for mild to full race B18c – B20 with 4.4, 4.7 or 4.9 with a rolling start where first is not used. This kit is only $824.50. Please call 714-903-1898 or contact us to special order.
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