Yamaha TZ350 & TZ250  Close Ratio 6 Speed Gearbox

The Nova Yamaha TZ 350 & TZ 250 full six speed close ratio gear set comprises both input and output shafts and all gears, supplied fully assembled ready for installation.

All engagement dogs are undercut and have three dogs to promote positive and rapid engagement.

Gear ratios have been optimized for racing and are as follows:

   
Nova Ratios >
1st 19 - 30 1.579:1
} 20.8%
} 13.4%
} 11.2%
} 9.6%
} 6.2%
2nd 20 - 25 1.250:1
3rd 24 - 26 1.083:1
4th 26 - 25 0.962:1
5th 23 - 20 0.870:1
5th 27 - 22 0.815:1
 
Overall reduction 1st - 6th 48.4%
 
We also have available a couple of lower 1st gear options as follows:
1st : 19-31   1.632:1
1st : 19-32   1.684:1
Standard Yamaha Ratios >
1st 15 - 29 1.933:1
} 26.5%
} 20.8%
} 14.5%
} 9.6%
} 6.3%
2nd 19 - 27 1:421:1
3rd 24 - 27 1.125:1
4th 26 - 25 0.962:1
5th 23 - 20 0.870:1
5th 27 - 22 0.815:1
 
Overall reduction 1st - 6th 57.9%
Further Information >
All gears are superfinished to enhance durability and reduce friction.

Yamaha TZ350 & TZ250  Close Ratio 6 Speed Gearbox

Price £1700.00

+VAT (if applicable) & Carriage

 

Alt 1st Ouput Gears

Price £145.00

+VAT (if applicable) & Carriage

Availability: Call