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New disc-specific carbon frame with bolt-thru axles, internal cable routing and size-specific carbon layup

We’ve featured some interesting cyclocross bikes on road.cc recently, such as the Niner RLT9 and the Storck TIX, and here’s another, Canadian company Norco’s completely updated disc-equipped Threshold with bolt-thru front and rear axles on a sub-kilo carbon fibre frame.

Norco are a well regarded mountain bike company and it is clear they’ve brought this experience into the newly updated Threshold, in particular the 15mm bolt-thru axle on the carbon fork and a 12x142mm bolt-thru rear axle. To explain, that’s a 12mm diameter axle with a 142mm wheel spacing, a standard that is almost commonplace on many mountain bikes, particularly longer travel full suspension types, for reasons to do with extra stiffness and wheel security. Disc-equipped cyclocross bikes are increasingly borrowing this technology, the new Storck has them at both ends and Giant's latest TCX has a bolt-thru fork.

Their own full carbon fibre fork has been designed to offer plenty of mud clearance and uses the 15mm thru-axle standard.

Norco claim a sub-1,000g weight for the high-modulus carbon fibre frame, and it makes use of something they call ‘Armorlite’, a resin they claim produces a stronger frame and provides better resistance against impacts from things like rocks.

They’ve used size-specific carbon layup and tube shapes, so the stiffness of each frame size is ‘calibrated’ to the prospective rider, so basically a taller heavier rider on a large frame will have the same ride handling and performance as a shorter lighter rider on a smaller frame.

The frame features ‘ARC Race’ seatstays first developed for their Tactic road bike. These are small diameter tubes with a bow shape that Norco reckon work like  “micro-suspension to dampen fatiguing vibrations.” A bit of comfort on a cyclocross bike is desirable, whether you’re racing or riding for fun.

All the cables are now routed internally, using their new Gizmo universal cable routing system. It’s a proprietary design using two plugs that create a tight seal in the entry and exit ports so better to keep water and dirt out with the added benefit of preventing the cables rattling.

Norco will offer four build options, including a Dura-Ace Di2 with RS785 hydraulic disc brakes at the top and an entry-level Shimano 105 with Hayes CX Comp mechanical discs. No word yet on UK pricing or availability. 

More at www.norco.com/15threshold/

David has worked on the road.cc tech team since July 2012. Previously he was editor of Bikemagic.com and before that staff writer at RCUK. He's a seasoned cyclist of all disciplines, from road to mountain biking, touring to cyclo-cross, he only wishes he had time to ride them all. He's mildly competitive, though he'll never admit it, and is a frequent road racer but is too lazy to do really well. He currently resides in the Cotswolds.

6 comments

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benb [80 posts] 2 years ago
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Very nice.

I can't work out one of the models on the Norco page.
The Threshold SL Ultegra has Shimano Ultegra marked as shifter/derailleur. I.E. not Di2.

But the brakes on that model are listed as Shimano BR-RS785 Hydraulic Disc

I thought the Shimano hydraulic discs would only work with a Di2 setup? Or am I wrong?

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David Arthur @d... [691 posts] 2 years ago
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You missed this story then benb

" Shimano has launched ST-RS685, a compact hydraulic disc brake lever for mechanical shifting, so you use regular derailleurs and regular cables."

http://road.cc/content/news/115210-shimano-introduces-road-hydro-disc-br...

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David Arthur @d... [691 posts] 2 years ago
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You missed this story then benb

" Shimano has launched ST-RS685, a compact hydraulic disc brake lever for mechanical shifting, so you use regular derailleurs and regular cables."

http://road.cc/content/news/115210-shimano-introduces-road-hydro-disc-br...

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banzicyclist2 [299 posts] 2 years ago
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Looks like a very nice bike

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bikebot [1916 posts] 2 years ago
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I've been riding a Threshold for about 18 months, bought it as a commuter with the intention of also buying a roadie later. That still hasn't happened because they're great fun, relatively cheap and super flexible. The alloy frame version has all the mounting points you'd need for commuting and even a little touring.

If you haven't got the space for n+1 bikes, Cross bikes are the best option other than a Tardis.

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benb [80 posts] 2 years ago
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David Arthur wrote:

You missed this story then benb

" Shimano has launched ST-RS685, a compact hydraulic disc brake lever for mechanical shifting, so you use regular derailleurs and regular cables."

http://road.cc/content/news/115210-shimano-introduces-road-hydro-disc-br...

Ah, thanks. Look similar to the trp hy-rd ones I use. Must be listed wrong on the site then, as they are listed as BR-RS785 brakes.