Pro bike: Emily Batty’s Trek Cronus CX Ultimate

The Canadian mountain bike racer's cyclocross bike

Josh Patterson/Future Publishing

Published: February 3, 2013 at 3:23 pm

Emily Batty is best known for her prowess on the mountain bike, though she can also hold her own on the 'cross course. Her weapon of choice is a Trek Cronus CX Ultimate outfitted with a handful of custom components that better suit the petite Canadian racer.

Trek introduced the Cronus CX Ultimate in 2011. Trek may have been slow in bringing a carbon ’cross rig to market, though it appears the company spent a lot of time sweating the details. The Cronus CX Ultimate features American style geometry with neutral angles and a relatively low bottom bracket. Trek included a number of thoughtful touches, such as a fork-mounted cable stop to mitigate brake shudder, internal cable routing that allows for partial or full-length housing, a wide BB090 bottom bracket shell, hidden fender mounts, bridgeless chain stays and better than average mud clearance.

Vertically challenged riders can have a difficult time finding a cyclocross bike that fits them properly. That is unlikely to be the case with this bike. The 5ft 3in Batty rides a 50cm frame (the smallest of the six frame sizes offered). It has 50.6cm seat tube and an effective top tube that is 50.9cm in length.

The 5ft 3in batty rides a 50cm chronus cx ultimate: the 5ft 3in batty rides a 50cm chronus cx ultimate - Josh Patterson/Future Publishing

Batty’s Bontrager Evoke RXL is slammed as far forward as it can go on the XXX Race Lite seatpost. This is not a matter of trying to shorten the reach; her forward position is optimized for her leg length.

“Because of her shorter femurs she runs a more forward setup. Her setback is only 1cm behind the bottom bracket,” said Trek Factory Racing team mechanic Matt Opperman.

Batty's forward position compensates for her short femurs: batty's forward position compensates for her short femurs - Josh Patterson/Future Publishing

Batty's forward positioning compensates for her short femurs

Batty runs a mostly Shimano 7900 Dura-Ace component group with a Shimano CX70 crankset and front derailleur. The CX70 front derailleur has a 16-tooth chain ring capacity and is optimized for cyclocross gearing. Batty runs a lower-than-average 42/34T chain ring combination. She’s not alone in running smaller chainrings for ’cross; Batty's teammate Katie Compton runs WickWërks chain rings in a 44/34T combo on her custom Trek Ion.

Batty spins a 42/34t chainring combo: batty spins a 42/34t chainring combo - Josh Patterson/Future Publishing

Batty's cyclocross bikes are equipped with 42/34T chain rings

Batty named her two Cronus CX Ultimate race bikes "Randy’s Miracle 1 and 2" in honor of friend Rich Weis' seven-year-old son, Randy, who is undergoing treatment for spinal cancer that almost left him paralyzed. Interested parties can learn more about Randy's story and offer their support by visiting <!-- /* Font Definitions */ @font-face {font-family:"MS 明朝"; mso-font-charset:78; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:-536870145 1791491579 18 0 131231 0;} @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-charset:0; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:-536870145 1107305727 0 0 415 0;} @font-face {font-family:Cambria; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-charset:0; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:-536870145 1073743103 0 0 415 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-unhide:no; mso-style-qformat:yes; mso-style-parent:""; margin:0in; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:Cambria; mso-ascii-font-family:Cambria; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"MS 明朝"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Cambria; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} a:link, span.MsoHyperlink {mso-style-priority:99; color:blue; mso-themecolor:hyperlink; text-decoration:underline; text-underline:single;} a:visited, span.MsoHyperlinkFollowed {mso-style-noshow:yes; mso-style-priority:99; color:purple; mso-themecolor:followedhyperlink; text-decoration:underline; text-underline:single;} .MsoChpDefault {mso-style-type:export-only; mso-default-props:yes; font-family:Cambria; mso-ascii-font-family:Cambria; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"MS 明朝"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Cambria; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} @page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.25in 1.0in 1.25in; mso-header-margin:.5in; mso-footer-margin:.5in; mso-paper-source:0;} div.WordSection1 {page:WordSection1;} www.randysmiracle.com.

Complete Bike Specifications

  • Frame: Trek Cronus CX Ultimate, 50cm
  • Fork: Trek Cronus CX, carbon legs, aluminum steerer, 1.125in to 1.5in tapered
  • Headset: Cane Creek 40 Series integrated
  • Stem: Bontrager RXL, 100mm -7°
  • Handlebar: Bontrager Race Lite, 40cm
  • Front brake: TRP Revo X Carbon
  • Rear brake: TRP Revo X Carbon
  • Shift/Brake levers: Shimano Dura-Ace 7900
  • Front derailleur: Shimano CX70 braze-on
  • Rear derailleur: Shimano Dura-Ace 7900
  • Cassette: Shimano Dura-Ace 7900
  • Chain: Shimano Dura-Ace 7900
  • Crankset: Shimano CX70, 170mm crankarms
  • Chainrings: Sugino 42T, Shimano 34T
  • Bottom bracket: Enduro press-fit for Trek BB90
  • Pedals: CrankBrothers Eggbeater 11
  • Wheelset: Bontrager Aeolus 3 D3, tubular
  • Front tire: Clement PDX tubular, 33mm
  • Rear tire: Clement PDX tubular, 33mm
  • Saddle: Bontrager Evoke RXL, carbon rails
  • Seatpost: Bontrager XXX Race Lite

Critical Measurements

  • Rider's height: 1.59m (5ft 3in)
  • Rider's weight: 48kg (106lb)
  • Saddle height: 64cm
  • Saddle setback: 1cm
  • Seat tube length, c-t: 51cm
  • Seat tube length, c-c: 46cm
  • Tip of saddle nose to C of bars: 45cm
  • Saddle-to-bar drop: 3cm
  • Head tube length: 105mm
  • Top tube length (horizontal): 509mm
  • Total bicycle weight: 7kg (15.5lb)