"Infinity" Associated B5/B6 Carbon Fiber Idler Shaft by X Factory

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The X Factory "Infinity" Associated B5/B6 Carbon Fiber Idler Shaft is a direct replacement upgrade for the Associated B5 and B6 models. It's extremely light carbon fiber tube, cut to length so it drops in any Associated 5 or 6-series vehicle. It's also just ever so slightly bigger than the stock idler shafts, meaning the bearings for the idler gears are an easy press fit. This more perfect fit helps eliminate even the tiniest bit of slop in your transmission, resulting in a car that runs quieter and goes longer between rebuilds.


  • The tighter fit between this shaft and the idler gear bearings provides two main benefits:
  • A quieter transmission, as there's less movement between gears
  • A longer lasting transmission, as less movement means less wear

This product was added to our catalog on August 12, 2016

keith pang
Verified Owner
Sunday, Mar 19 2017 (about a year ago)
X Factory "Infinity" Associated B5/B6 Carbon Fiber Idler Shaft
Simple and effective, made my transmission stop barking and runs much smoother thanks Xfactory for making awesome products keep up the good work!
Javier Sautua
Verified Owner
Thursday, Jul 20 2017 (about a year ago)
X Factory "Infinity" Associated B5/B6 Carbon Fiber Idler Shaft
This thing is a must, really meakes the transmission quieter. For 4$ is a very nice upgrade, cheap and effective.