BMW Twin 6 Speed Close Ratio Gearbox

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BMW Twin 6 Speed Close Ratio Gearbox.

A full close ratio 6 speed gearset for the BMW Twin.

All gears have three undercut engagement dogs to allow for rapid and reliable changes and positive retention

Both shafts supplied fully assembled and ready to fit. We also supply two new camplates and selector forks.

We can supply both the older and newer cam forms on the input drive gear, so please specify when ordering. (Photo can be supplied to illustrate the difference).

Two options of drive gear available Z15 or Z16.

BMW Standard Ratios

1st

4.401:1

} 35.0%

} 27.6%

} 19.3%

} 10.2%

2nd

2.860:1

3rd

2.071:1

4th

1.670:1

5th

1.500:1

Overall reduction 1st – 5th :

65.9%

Nova Close Ratio 6 Speed

1st

15 – 29

1.933:1

} 22.41%

} 16.67%

} 12.38%

} 8.7%

2nd

18 – 27

1.500:1

3rd

20 – 25

1.250:1

4th

21 – 23

1.095:1

5th

22 – 22

1.000:1

6th

23 – 21

0.913:1

Overall reduction 1st – 6th : 52.77%

BMW Twin 6 Speed CR Gearbox

Price £3200.00

+VAT (if applicable) & Carriage.

Nova assembly:

Z15 08260-000

Z16 58260-000