Yamaha TZ350 & TZ250  Close Ratio 6 Speed Gearbox

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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              % Drop                            Standard Yamaha Ratios      %  Drop       

1st      19 - 30        1.579:1                                 1st      15 - 29       1.933:1    

                                                   )     20.8%                                                          )     26.5%

2nd     20 - 25        1.250:1                                2nd     19 - 27        1.421:1

                                                   )     13.4%                                                          )     20.8%

 3rd      24 - 26        1.083:1                                3rd      24 - 27       1.125:1 

                                                   )     11.2%                                                          )     14.5%

4th       26 - 25        0.962:1                                 4th      26 - 25       0.962:1

                                                   )       9.6%                                                          )        9.6%

5th       23 - 20        0.870:1                                 5th       23 - 20      0.870:1

                                                   )       6.2%                                                          )        6.3%

 6th      27 - 22         0.815:1                                6th      27 - 22       0.815:1

 

Overall Reduction 1st - 6th         48.4%           Overall Reduction 1st - 6th      57.8%      

 

All gears are superfinished to enhance durability and reduce friction.

 

To find out about availability or to order this product or for further information please click here

 

Price £1350 + VAT (if applicable) & Carriage

 

	Nova TZ350 Close Ratio Gearbox Superfinished