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FSA Onepointfive Headtube Reducers

Item #: HS610Z00
USD$23.95
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FSA Onepointfive Headtube Reducers

FSA Onepointfive Headtube Reducers

This kit from FSA reduces the internal diameter of your 1.5" headtube to 1-1/8" so that a traditional 1-1/8" fork and headset can be installed. Covnerts EC49 to a EC34.

4.2 / 5.0
10 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
3
6
1
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0
very good!!!
very good work!!! fast ship!!
November 17, 2013
Location:
Puerto Rico
I had a shop install...
I had a shop install it and I would suggest having a shop install it so you dont mess up your headtube. The way it is built this converter actually makes your headtube stronger and these things add almost no weight to your front end. Also when you use this you can run any 1 1/8" headset which is cheaper than an oversized one.
September 14, 2005
Location:
Apo, Ae United States
Jenson USA is great great reducers
FSA reducers are a great way to reduce your headset size JensonUSA makes parts hunting easy.

PROS: Lightweight, Quality Construction, Smooth Feel, Tight Seal

BEST USES: Upgrade, Mountain Biking
March 19, 2013
Location:
Salem,Oregon
Works as intended
Product works just like it should. It is pretty heavy for what it does. But I'm no weight weenie. Saved me a bunch of money over a whole new headset.

PROS: Smooth Feel, Quality Construction, Tight Seal

CONS: Heavy
June 9, 2014
Location:
AZ
Perfect Fitting
Worth it for that still has a fork 1 1/8 and do not want to discard it.

PROS: Quality Construction, Smooth Feel, Tight Seal

CONS: Heavy
March 22, 2014
Location:
Brazil
it works out great...
it works out great if you are dumb like me and didn't know you had a 1.5" head tube and you bought a 1 1/8" headset.
January 2, 2005
Location:
Breckenridge, Co Usa
FSA headtube reducer
I guess I thought that this would just drop into the existing headset and would act more like a bushing between the steer tube and the headset. I still got it to work, thank god I had an old headset layin around. Maybe I misunderstood or maybe its not explained that well, I don't know. Either way, it works and I'll just have to get a new headset now.

PROS: Fits looks good

CONS: Needed new headset
March 10, 2012
Location:
Plover, Wi
As described, heavier than expected
Until there is a standard for forks and headtubes, this product will be useful. I decided to run a CK headst from a previous bike and this was an economical route to go to run 1 1/8 on a 1.5 frame.

PROS: Allows 1 18 headset
March 11, 2012
Location:
San Diego
Location:
San Diego
Excellent Machining but not light
I had a newer King 1 1/8 headset and was going to run a 1 1/8 fork on my new 1.5 head tubed trail bike. I went with this to save a little money over buying a quality 1.5 headset. DIdn't want to install a cheap 1.5 headset. It went in easily and is strong. I expected it to be a little lighter, that's the only con.

PROS: Machining
June 12, 2012
Location:
San Diego
Location:
San Diego
Incompatible w/ Trek/Fisher e2 headtubes
The reducer bushing is too tall to fit in the 1.5" lower headset seat of Trek/Fisher e2 headtube geometry bikes.
January 26, 2012
Location:
Flagstaff, AZ

Q & A

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Browse 1 question Browse 1 question
I want to put a 1-1/8 fork in a frame with a tapered headtube. Does this spacer fit into the bare frame so that a 1-1/8 headset can be installed in it? I have ordered another spacer or two and it always seems they are talking about something else because they don't quite fit. My headset measures 44mm and the inside of my frame measures about 55.5mm.
Al on Oct 11, 2016

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Free Shipping Offer

Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.

Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.