Pro bike: Emily Batty’s Trek Cronus CX Ultimate

The Canadian mountain bike racer's cyclocross bike

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 frame
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: 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: 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

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)