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Protec Ahead Converter - 1" to 1.1/8th

Customer Reviews (4)
4.5 / 5| Write your review
£11.99 Please note this product has selling restrictions to your country. was
Manufacturer : 
SJS Cycles part number : 
Manufacturer part number : 
Converts threaded forks to accept an ahead stem.

Includes shims for both the fork and the stem for 1" and 1 1/8".

Max height: 65mm
Min height: 45mm
Product Reviews (4)
Questions & Answers (4) Q & A
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Product Reviews (4)
Overall Product Rating 4.5 / 5
Perfect for the job
By Aleman
18 May 2020
5 / 5
I recommend this product
ConsNot Black :(
ProsEasy to fit, Price, Supplied with shims, well made
Converting a 1989 Dawes tandem to straight bars, leaves you with a dilemma. It's a 1" threaded stem with a quill clamp. No way are you going to get parts to suit ... Step in this little marvel, which comes supplied with a shim for the quill, and one for the bar stem. Didn't need the quill on, but did for the stem ... Literally 5 minutes to fit.
Great Bit Of Kit
By Anonymous
17 Aug 2012
5 / 5
I recommend this product
Used to fit on a Syncros ahead stem to the threaded p2 forks on my olde Kona. Impressed with item and prompt delivery. Thank you
Does What It Says On The Tin
By Anonymous
29 Jul 2012
3 / 5
I recommend this product
ProsIt works
Converted an old GT frame with 1 1/8 headset to a new stem and bars to amke it suitable for my son. Have to use both shims supplied, but it provides a secure fitting.
Does The Job No Fuss
By double oh nine
12 Jan 2012
5 / 5
ProsIt just works
I have an old 1980's MTB which I've resurrected into my commuter. I needed to reposition the bars, but I could not find a suitable quill type stem. This thing opened up my options it grips solidly in the steerer tube and has allowed me to choose a suitable front loading ahead type stem.
Questions & Answers (4)
Can I Use the Protec Ahead converter to convert my 1" ahead steerer to 1 1/8" to take a 1 1/8 stem?
17 Apr 2020
Hi, yes you can. Thanks 20/04/2020
Would this extend my one inch threadless forks so I can use a new skool stem on my grifter
09 Nov 2018
As I bought one off eBay and doesn’t fit my forks only fits 11/8 if I take my star nut out that is
Yes, you can use this on either a 1
I Have A Top Cap That I Would Still Like To Use, Is It Possible To Use It On This Converter? Thanks
06 Dec 2016

It is possible to use a different top cap with this converter, you will still need to use the supplied bolt though.

14 Sep 2016
Can you clarify the dimensions of this product. Is the max height of 90mm quoted, the distance from the min-insert line to the top of the stem? If so, the photograph does not seem consistent with this size. Thanks.

The dimensions for this product are incorrect, the maximum height should be 65mm.