2012 nytro mtx drivers/shaft vs previous years?

[mtnmodviper]

Do the 2012's use a larger diameter driveshaft? Are the 2012 drivers 7 or 8 tooth? Do they hold up better under boost?

 

[apex jeff]

Do the 2012's use a larger diameter driveshaft? Are the 2012 drivers 7 or 8 tooth? Do they hold up better under boost?

I was told by the dealer the new combo drivers would press right on my 2010 mtx shaft. I went with avids and the new ascent(love it!). Yamaha touted the new drivers as weight saving 2versus4. The new drivers are a "combo" of the earlier 7 tooth window driver and 7 eared lug driver.

Jeff