Muddymoles mountain biking in the Surrey Hills and Mole Valley

On-One carbon 456

Posted by MarkyMark | March 1, 2012 | 6 comments so far

On-One 456 in carbon with no saddle!

With the widespread adoption of the 29er, the growing debate of 29er vs. 26er mtb’s is hot amongst riding groups. The options are wider than ever, but the bottom line is “which one is right for me”?

When I spec’d out my latest custom build I was thinking about the type of riding I do, plus looking ahead I’ll be dipping into the XC races like Mountain Mayhem now and again. I was looking for a bike that would handle what I want to throw at it, with increased climbing acceleration and agility.

Given the specs of the 29ers I don’t see this changing for me just yet, and after months of deliberation decided the starting point for a 2012 build would be the all trail centre/all mountain hardtail On One carbon 456 .

At 6’1 I fall into the taller side of the sizing spectrum and opted for an 18inch Large (frame weight 3.3lbs / 1500g) with a top tube length of 609mm. Interestingly, this build ran in parallel with a Cotic Soda Ti to Ibis Tranny frame swop (which I’ll be reviewing another time). The Ibis Tranny in Large comes in at 3.1lbs with a top tube length of 600mm (the XL for the Tranny is 620mm).

The 456 carbon has oversized and burley front end curves with geometry that will give you compliant handling with a 100-160mm max fork geometry range. This particular build comprised of a mixed tapered headset (On One’s Smoothie Mixer) with crown race reducer accommodating the 1 1/8 steerer of Reba RLT 120’s.

Still in the cockpit, Chris King spacers (25mm solid + 5mm spare on top) and a Thomson Elite X4 110mm 10degrees stem support RaceFace Next 3/4 carbon riser bars. Stopping power is provided by the awesomeness of Hope’s Race X2’s on MatchMaker clamps with 183mm front/160mmm rear floating rotors with black spider, consistent with black/silver ‘stealth’ colour scheme throughout.

On-One 456 in carbon 2x10 XTR drivetrain

The rear end is lean and hosts the latest 2×10 drivetrain mix. In the middle a lush XTR trail 38/26 (175mm) crankset and bottom bracket, with its wingman, an XTR double (top pull) front derailleur. At the back end goes an 11-36T XT cassette (although I feel already a 34T will be more than enough). Shifters and medium cage rear derailleur are courtesy of SRAM X0.

Moving skywards, a Thomson in-line 410mm seat post and, in the perch, SDG’s Bel Air RL Ti.

Bearing in mind intended use, all this sits on Stan’s ZTR Arch rims on Hope Pro II EVO hubs, with DT s/s Competition spokes and Schwalbe Nobby Nic 2.1’s (b*stards to get on as some of you will know all too well!)

Finishing kit includes ODI Rogue grips and a MuckyNutz 2.1 fender bender.

I took her and rode her hard. A test loop across Epsom Downs followed by a magic local (snow) night-ride was enough to check she was functioning perfectly, as well as to establish that this could be an absolute weapon in the right hands. In traditional bike test parlance, she was stiff and responsive, with acceleration that defied belief. The frame itself felt lively and solid.

Over the coming weeks/months I’ll be reviewing the ride and the components in more detail… starting with the notable XTR/X0 2×10 set up.

Frame On-One 456 Carbon 18″
Forks RockShox Reba RLT 120mm
Headset On-One Smoothie Mixer
Bars RaceFace Next 3/4 carbon
Stem Thomson Elite X4 110mm
Shifters SRAM X0
Front mech XTR 2×10 top pull
Rear mech SRAM X0
Chain Shimano
Cassette Shimano 11-36T
Chainset Shimano XTR 2×10 Trail
Front brake Hope Race XC
Rear brake Hope Race XC
Rims Stans Arch
Hubs Hope ProII EVO
Tyres Schwalbe Nobby Nic 2.1
Rear Shock N/A
Seatpost Thomson Elite 410mm
Saddle Bel Air RL Ti
Pedals Shimano XT

Filed under Bikes in March 2012


About the author

Every riding group has a bike mechanic of some sort, even if they're just enthusiastic knowledgeable amateurs. Well Mark is a bit more than that, he is actually a qualified bike mechanic and has a certificate and everything to prove it. This comes in handy more often than you'd think (the bike mechanic bit, not the certificate bit you understand...)

There are 6 comments on ‘On-One carbon 456’

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  1. Dave says:

    That’s a nice looking, nicely spec.’d bike there Mister! I like the black and silver look.

    Silver could be the new pink!

  2. tony says:

    Hi Mark

    I’m no bike mechanic like you but I think that you’ve missed something on top of the pointy bit in the middle of the bike?

    Plus your spanners (on the table) maybe explain why?

  3. Markymark says:

    LOL , when this was taken the saddle hadn’t arrived and i was under pressure to share the love with the few who knew about the ‘secret build’ (excluding the wife).

    Now and again I do actually find missing Park Tools in the sandpit that occupy the centre of that picnic bench Tony 🙂

  4. Ken says:


    Lovely looking ride!
    Having sold my Cove Hustler FS
    I am looking to build/purchase as lightweight carbon hardtail with 120 forks and an upright riding position.
    I have been looking at the 456 Frame but was a bit concerned it might be more suited to longer forks.
    How do you find the 120 fork set up with the frame….not too short is it?
    Was also hoping the carbon frame would be take a bit of the sting out the rear end having come from a FS.
    How are you liking your build?
    What weight did it all come in at?



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