Gear X B-series Close Ratio Gear Sets

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Gear-X gear sets are widely used in both professional and grassroots motor sports, regarded as the best "bang for the buck" brand due to the the extremely high quality manufacturing and very competitive pricing. Changing gear sets is a very effective way to tune your tranmission for competition use, any Gear X gear set will completely transform the acceleration and torque delivery properties of your car, outlined are the eight Gear X close ratio gear sets available for the B series transmission:

Close Ratio Road Race Set 1:
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 - 5% taller than stock ITR/B16/GSR/LS, allows better use of 1st in very tight corners.
[2nd OEM 2.105] Use stock Type R/B16 gear 
3rd 1.652 - 12% shorter than ITR/B16, 18% shorter than GSR, 23% shorter than LS
4th 1.296 - 15% shorter than ITR/B16, 20% shorter than GSR, 25% shorter than LS
5th 1.000 - 15% shorter than ITR/B16, 21% shorter than GSR/JDM ITR, 29% shorter than LS

Close Ratio Road Race Set 1B:
Suitable for mild to full race B18c –B20 with 4.4 or 4.7 rolling start where first is not used.

[1st OEM 3.320] Use stock Type R/B16/GSR/LS gear
[2nd OEM 2.105] Use stock Type R/B16 gear 
3rd 1.652 - 12% shorter than ITR/B16, 18% shorter than GSR, 23% shorter than LS
4th 1.296 - 15% shorter than ITR/B16, 20% shorter than GSR, 25% shorter than LS
5th 1.000 - 15% shorter than ITR/B16, 21% shorter than GSR/JDM ITR, 29% shorter than LS

Close Ratio Road Race Set 2:
Suitable for all B series applications with 4.2, 4.4 or 4.7 final drives, particularly effective for circuits with tight 2nd-3rd gear corners.

1st 3.07 - 5% taller than stock ITR/B16/GSR/LS, allows better use of 1st in very tight corners.
[2nd OEM 2.105] Use stock Type R/B16 gear 
3rd -1.695 - 14% shorter than ITR/B16, 20% shorter than GSR, 25% shorter than LS
4th 1.296 - 15% shorter than ITR/B16, 20% shorter than GSR, 25% shorter than LS
5th 1.000 - 15% shorter than ITR/B16, 21% shorter than GSR/JDM ITR, 29% shorter than LS

Close Ratio Road Race Set 3:
Suitable for mild B16 and B18c with 4.4, 4.2 final drives, slightly shorter 5th than Close Ratio Road Race Set 1 for smaller tracks but otherwise identical.

1st 3.07 - 5% taller than stock ITR/B16/GSR/LS, allows better use of 1st in very tight corners.
[2nd OEM 2.105] Use stock Type R/B16 gear
3rd 1.652 - 12% shorter than ITR/B16, 18% shorter than GSR, 23% shorter than LS
4th 1.296 - 15% shorter than ITR/B16, 20% shorter than GSR, 25% shorter than LS
5th 1.033 - 18% shorter than ITR/B16, 24% shorter than GSR/JDM ITR, 31% shorter than LS

Close Ratio Road Race Set 4:
Suitable for mild to full B16 and mild B18 with 4.4 or 4.7. final drives with 2nd, 3rd, 4th very close with a slightly wider gap to 5th than in Close Ratio Road Race Set 1 and Close Ratio Road Race Set 2 due to very short 4th gear.

1st 3.07 - 5% taller than stock ITR/B16/GSR/LS, allows better use of 1st in very tight corners.
[2nd OEM 2.105] Use stock Type R/B16 gear
3rd 1.695 - 12% shorter than ITR/B16, 18% shorter than GSR, 23% shorter than LS
4th 1.385 - 21% shorter than ITR/B16, 25% shorter than GSR, 30% shorter than LS
5th 1.000  - 15% shorter than ITR/B16, 21% shorter than GSR/JDM ITR, 29% shorter than LS

Close Ratio Irish Rally Set:

Rally close ratio kit 3rd, 4th, 5th gear set developed to withstand the shock loads of Irish Tarmac Rallying. Suitable for mild to full race B16a (4.9 Straight Cut final drive is strongly recommended)

[1st OEM 3.320] Use stock Type R/B16/GSR/LS gear
[2nd OEM 2.105] Use stock Type R/B16 gear
3rd 1.625 - 10% shorter than ITR/B16, 16% shorter than GSR, 22% shorter than LS
4th 1.296 - 15% shorter than ITR/B16, 20% shorter than GSR, 25% shorter than LS
5th 1.033 - 18% shorter than ITR/B16, 24% shorter than GSR/JDM ITR, 31% shorter than LS