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Trek unveils the Émonda a 10-pound road bike

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The Trek Emonda SLR 10 was revealed in Harrogate, England just ahead of the Tour de France

The Trek Emonda SLR 10 was revealed in Harrogate, England just ahead of the Tour de France (Image credit: Ben Delaney/Future Publishing)
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Being the lightest production group, SRAM Red got the group spec

Being the lightest production group, SRAM Red got the group spec (Image credit: Ben Delaney/Future Publishing)
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Part of how Trek achieves the hyper-low weight is integrated componentry like this Bontrager XXX bar/stem

Part of how Trek achieves the hyper-low weight is integrated componentry like this Bontrager XXX bar/stem (Image credit: Trek Bicycle Corporation)
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The integrated DuoTrap sensor records speed and cadence

The integrated DuoTrap sensor records speed and cadence (Image credit: Trek Bicycle Corporation)
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Part of how Trek achieves the hyper-low weight is integrated componentry like this Bontrager XXX bar/stem

Part of how Trek achieves the hyper-low weight is integrated componentry like this Bontrager XXX bar/stem (Image credit: Trek Bicycle Corporation)
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The Trek Emonda SLR 8 is Shimano Dura-Ace with Bontrager X Lite tubeless wheels

The Trek Emonda SLR 8 is Shimano Dura-Ace with Bontrager X Lite tubeless wheels (Image credit: Trek Bicycle Corporation)
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The Trek Emonda SLR 9 WSD women's bike comes with Shimano Dura-Ace and Bontrager Aeolus 3 D3 wheels

The Trek Emonda SLR 9 WSD women's bike comes with Shimano Dura-Ace and Bontrager Aeolus 3 D3 wheels (Image credit: Trek Bicycle Corporation)
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The Trek Emonda S 5 is a Shimano 105 bike

The Trek Emonda S 5 is a Shimano 105 bike (Image credit: Trek Bicycle Corporation)
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The Trek Emonda SL 6 comes with Shimano Ultegra

The Trek Emonda SL 6 comes with Shimano Ultegra (Image credit: Trek Bicycle Corporation)
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Trek tested the Emonda at the Dauphiné

Trek tested the Emonda at the Dauphiné (Image credit: Trek Bicycle Corporation)
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Trek tested the Emonda at the Dauphiné

Trek tested the Emonda at the Dauphiné (Image credit: Trek Bicycle Corporation)
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Trek used its pro riders as part of the 30-month creation process for the climbing bike

Trek used its pro riders as part of the 30-month creation process for the climbing bike (Image credit: Trek Bicycle Corporation)
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Bontrager Speed Stop direct-mount brakes saves about 35g per caliper over standard brakes

Bontrager Speed Stop direct-mount brakes saves about 35g per caliper over standard brakes (Image credit: Trek Bicycle Corporation)
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The top-end Emonda frame weighs a claimed 690g in a painted 56cm size

The top-end Emonda frame weighs a claimed 690g in a painted 56cm size (Image credit: Trek Bicycle Corporation)
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The new Trek Emonda SLR 10 weighs a scant 10.25lb built up as shown

The new Trek Emonda SLR 10 weighs a scant 10.25lb built up as shown (Image credit: Trek Bicycle Corporation)
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And a Tune Komm-Vor Plus saddle to top it off

And a Tune Komm-Vor Plus saddle to top it off (Image credit: Ben Delaney/Future Publishing)
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The Bontrager XXX bar/stem combo works for 'the vast majority of riders,' said Trek road bike manager Ben Coates

The Bontrager XXX bar/stem combo works for 'the vast majority of riders,' said Trek road bike manager Ben Coates (Image credit: Ben Delaney/Future Publishing)
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Tune provides the Skyline rims for the Bontrager Speed Stop brakes

Tune provides the Skyline rims for the Bontrager Speed Stop brakes (Image credit: Ben Delaney/Future Publishing)
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Tune MAG150 rear hub

Tune MAG150 rear hub (Image credit: Ben Delaney/Future Publishing)
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Jagwire Prolink cable housing is used to shave every last gram

Jagwire Prolink cable housing is used to shave every last gram (Image credit: Ben Delaney/Future Publishing)
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The Émonda's packed away in the back of a van

The Émonda's packed away in the back of a van (Image credit: Trek Bicycle Corporation)
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Bob Jungels' Trek Émonda seen at the Criterium du Dauphiné

Bob Jungels' Trek Émonda seen at the Criterium du Dauphiné (Image credit: Trek Bicycle Corporation)
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Putting together an Émonda

Putting together an Émonda (Image credit: Trek Bicycle Corporation)
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Checking an early model of the Trek Émonda as the RadioShack kit suggests

Checking an early model of the Trek Émonda as the RadioShack kit suggests (Image credit: Trek Bicycle Corporation)
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Trek set out to build the lightest mainstream production road bike

Trek set out to build the lightest mainstream production road bike (Image credit: Trek Bicycle Corporation)

This article first appeared on BikeRadar.

Although the bike had been seen at the Critérium du Dauphiné, Trek finally pulled back the curtain on the new Émonda just days before the Tour de France. At a claimed 690g for a painted 56cm frame, the hyperlight road machine builds up to a 10.25-pound complete bicycle thanks in part to new Bontrager integrated components like an XXX bar/stem combination and Speed Stop direct-mount brakes.

There are three models of the new Émonda, from the SLR 10 that is made in Waterloo, Wisconsin, down through the SL and S models, plus women's WSD builds. Pricing ranges from US$1,429 / £1,200 up to US$15,749 / £11,000 for the Émonda SLR 10. Each base model uses a different level of carbon, with the SL and S getting progressively heavier while retaining the same design and shape.

Trek's goal from the outset of the project, 30 months ago, was to build the lightest production road bike on the market. Besides being hyperlight, the bike also had to be an elite-level race machine. After years of testing, using pro-rider feedback, strain gauges, accelerometers, and countless iterations of geometry and lay-up prototypes, Trek engineers believe they have succeeded in that goal.

Trek road bike manager Ben Coates said that Trek was targeting Cannondale's SuperSix Evo Black, with its claimed 725g frame weight — "We weighed one at 710g," he said — but pointed out that a Specialized S-Works SL4 is 897g — "and their new Tarmac is even heavier," he noted.

To achieve the astonishing 4.65kg / 10.25lb complete weight, Trek built up the SLR 10 with Tune Skyline tubular rims, MIG45/MAG150 hubs and Komm-Vor Plus saddle, a SRAM Red 22 group with ceramic bearings, a Cane Creek AER headset, Jagwire's new sectioned housing, Vittoria Crono CS 22c tubulars, and Bontrager XXX integrated bar/stem and Speed Stop direct-mount brakes.

For the shape of the XXX bar/stem, which has a 129mm drop and 93mm reach, Trek consulted a variety of riders from pros to everyday Joes, Coates said.

"We found that for the vast majority of riders, the variation in bar rotation is very small," he said. "A few guys, like Jens Voigt, have their bars really rotated. But for the most part, it is the lever position that dictates how the bar feels."

Eliminating the traditional mechanical junction between bar and stem reduced the weight by about 75g over a comparable system, Coates said.

Now Trek has three road bikes: the Domane endurance bike, the Madone race bike and this new Émonda climbing machine. When BikeRadar asked for an apples-to-apples comparison on how the latter two compare, Coates declined to give specific numbers, but said they are quite similar in stiffness and compliance.

"In bench tests they are essentially the same," Coates said. "The Madone has a stiffer head tube, but it is not as stiff in the chain- and seatstays. The compliance numbers are virtually the same."

BikeRadar will be testing an Émonda on part of the Tour de France stage 1 route Wednesday, so check back soon for a First ride review.

In terms of geometry, the Émonda is a little shorter in the front center, and a little longer in the chainstays than the Madone.

With the exception of the Shimano 105 bikes, the Émonda bikes are available in shops now.

For more details on specific Émonda models, visit trekbikes.com.

BikeRadar will be testing an Émonda on part of the Tour de France stage 1 route Wednesday, so check back soon for a First ride review.