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AJR/Bultaco 350 TSS Close Ratio 6 Speed Gearbox

We have re-designed our Nova 6 speed gearbox up to our latest specification.  This includes billet machined selector forks, dogs re-designed to give slicker shifting and less backlash.  Also we have changed the ratios to allow for stronger teeth to increase strength and durability.  Various ratios are available to give maximum performance on both short and road tracks.

We supply the input and output shafts assembled and ready to fit, along with a new selector drum and 3 selector forks.

Superfinished in house as standard.

1st 19 – 32 1.684:1
} 25.1%
} 17.5%
} 14.1%
} 8.0%
2nd 23 – 29 1.261:1
3rd 25 – 26 1.040:1
4th 28 – 25 0.893:1
5th 28 – 23 0.821:1
Overall reduction 1st – 5th 51.2%

1st 17 – 28 1.647:1
} 20.1%
} 16.8%
} 12.7%
} 9.1%
} 8.0%
2nd 19 – 25 1.316:1
3rd 21 – 23 1.095:1
4th 23 – 22 0.957:1
5th 23 – 20 0.870:1
6th 25 – 20 0.800:1
Overall reduction 1st – 6th 51.4%

1st 16 – 29 1.813:1
} 27.40%
} 16.76%
} 12.67%
} 9.09%
} 8.00%
2nd 19 – 25 1.316:1
3rd 21 – 23 1.095:1
4th 23 – 22 0.957:1
5th 23 – 20 0.870:1
6th 25 – 20 0.800:1
Overall reduction 1st – 6th 55.86%

1st 16 – 29 1.813:1
} 24.5%
} 19.96%
} 12.67%
} 9.09%
} 8.00%
2nd 19 – 26 1.368:1
3rd 21 – 23 1.095:1
4th 23 – 22 0.957:1
5th 23 – 20 0.870:1
6th 25 – 20 0.800:1
Overall reduction 1st – 6th 55.86%

1st 17 – 29 1.706:1
} 22.7%
} 16.76%
} 12.67%
} 9.09%
} 8.00%
2nd 19 – 25 1.316:1
3rd 21 – 23 1.095:1
4th 23 – 22 0.957:1
5th 23 – 20 0.870:1
6th 25 – 20 0.800:1
Overall reduction 1st – 6th 53.10%

AJR/Bultaco 350 TSS Close Ratio 6 Speed Gearbox

Price £POA.

Nova assembly:

00126 original

233 (C) – 5 dog

234 (D) – 5 dog

235 (E) – 5 dog

236 (F) – 5 dog