0

I have an old giant warp D's 2 bike that's about 10 years old. I've maintained it and it still rides good and looks just as good. I wanted to upgrade from the old alivio 8 speed drivetrain to either a new alivio or altus 9 speed ddrivetrain but wasn't sure if the cassette would fit on the freehub on the bike and I didn't want to buy the components and then found out they couldn't fit and then be stuck with useless parts. Could somebody please help the old man stuck in a rut?

Improve this question
8
  • Why 9 speed? You can still get good 8 speed shifters and its not like the extra speed will help.
    – Batman
    Commented Feb 24, 2015 at 16:55
  • I Actually Want To Go To 9 Speed For The Summer When I Go On Vacation To Pennsylvania
    – Terrance S. Randolph
    Commented Feb 24, 2015 at 17:12
  • 1
    I still don't see how the extra cog in the back is going to help -- you're better off picking up a well chosen 8 speed cassette, especially on a commuter.
    – Batman
    Commented Feb 24, 2015 at 18:04
  • A 9s cassette will fit with to a 8s freehub. You also don't really need to replace the crankset although it would improve the culture of shifting.
    – Slovakov
    Commented Feb 24, 2015 at 18:58
  • Hello Batman. I Was Wondering If You Could Help Me ???? Would You Happen To Know If The 9 Speed Shimano Crank And Cassette Might Fit On My Giant Warp DS 2 ??? I Actually Was Going To Overhaul The Entire Drive train If I Could Go Up To A 9 Speed From An 8 Speed.
    – Terrance S. Randolph
    Commented Feb 24, 2015 at 19:43

1 Answer 1

Reset to default
1

A 9 speed cassette will fit on an 8 speed hub. The extra gear is accommodated using thinner cogs and spacers. You will also need a new shifter as its the shifter that provides the indexing for the gears. If you also increase the range of gears (increase the largest cassette cog), you may need a new rear deraileur.

Its possible to run 8 speed chain rings with a 9 speed chain, but you will get better shifting upgrading the chain-rings. In this case, replacing the entire crank set might be cheaper.

There would be little advantage replacing the deraileurs (especially the front) unless they are worn out.

Improve this answer

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.