02-05 Honda CRF450R Close Ratio 6 Speed Gearbox

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Turns a standard Honda CRF 450 5 Speed motocross engine into a road racing missile!!  A completely original design requiring new gearshafts selector drum and forks.  Prototypes ridden in the British Supermono Championship by Jeff Claridge and Michael Payne have shown the way forward; the pair finishing 5th and 2nd in 2009.

 

This kit includes two assembled shafts, a new selector drum and three selector forks.

 

The gearbox needs to be assembled using Honda parts, we can supply these at an additional cost.  These are not the same as the standard CRF450 gearbox parts. Please contact us for what is required.

 

CLICK HERE FOR CRF450 PRIMARY DRIVE

 

Available With Superfinish

 

Click here for an explaination about gear ratios

 

Gear Ratio's

Nova Race Gearset                     % Drop                Honda Moto X Box

1st      15 - 27        1.800:1  
                                                   )      21.6%                        18.3%
2nd    17 - 24         1.412:1 
                                                   )      13.5%                        16.0%
3rd     18 - 22         1.222:1 
                                                   )      10.4%                        15.0%
4th      21 - 23         1.095:1   
                                                   )        8.7%                        13.4%
5th      23 - 23         1.000:1  
                                                   )        7.7%                                     

6th      26 - 24         0.923:1          

 

Overall Reduction                          48.7%           Overall Reduction   49.5%

 

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

 

Price £1700 + VAT (if applicable) & Carriage

	Nova Honda CRF450 Close Ratio 6 Speed Road Race Gearbox

CLICK HERE FOR HONDA CRF450 BILLET ENGINE CASES DESIGNED TO FIT A HONDA RS125 CHASSIS.