MSRP: $2,799


The Rider

Endurance riders that seek a fast, but comfortable platform to tackle a gran fondo, Saturday morning group ride, or a fast blast after work.

The Bike

The RT-1100 is the endurance cyclist's ultimate tool when the miles stack up. Utilizing the latest technology in frame construction, the RT-1100 is light, fast, and efficient. Disc brakes offer the highest level of control regardless of the weather.

The Tech

  • The All-New RT-1100 is constructed using our highest grade 800K high-modulus carbon fiber for a light, but incredibly strong platform. Kestrel's 800K carbon uses inner polyurethane molds in high-stress areas such as the BB shell and head tube to minimize wrinkles in the carbon layers for greater compaction, resulting in the lightest and highest performing frame possible.
  • KSL Superlight Carbon construction using polyurethane molds to optimize compaction, reducing weight and increasing frame stiffness.
  • The geometry places the rider in a slightly more upright riding position and uses a tapered 1 1/8""-1 1/2"" head tube which enhances lateral stiffness for excellent steering precision.
  • The full carbon KSL fork is shaped to match the aerodynamics of the downtube. Flat mount disc brake and 12mm thru axle improve steering control and stopping performance.
  • PF30 bottom bracket maximizes frame stiffness at the crank.
  • Oversized and shaped downtube increases stiffness at key areas to optimize power transfer
  • Shaped seat stays provide increased compliance for more comfort over uneven road surfaces
  • Asymmetrically shaped chain stays are designed to improve lateral stiffness and power transfer.
  • KSL aero seat post offers reversibility to allow the rider perfect fitment for road or triathlon use.
  • Integrated seat post clamp offers a cleaner aesthetic and improved aerodynamics
  • Each of frame size has unique tube lengths, diameters, shapes, and carbon layups to produce the best possible ride quality for every size rider.
  • Shimano’s NEW Ultegra R-8020 shifting offers best-in-class shift performance
  • Shimano’s NEW Ultegra R-8070 hydraulic disc brakes provide consistent repeatable stopping regardless of the weather conditions
  • Oval Concepts 524 Clincher wheelset offers lightweight and reliable performance
  • Zipp Service Course handlebar and stem provide premium performance



Weight18.06 lbs / 8.20 kg


Sizes45cm , 48cm, 51cm, 54cm, 57cm
FrameKestrel Super Light (KSL) 800K carbon fiber, FM Disc, PF30 BB
ForkKSL full-carbon, 1 1/8" - 1 1/2" tapered steerer, FM Disc 12mm TA


WheelsetOval Concepts 524, 700c 24/28H rims
TiresVittoria Rubino Pro, 700 x 28c, folding


CranksetShimano Ultegra, 50/34T
Bottom BracketPraxis PF30 Conversion 24mm spindle
Front DerailleurShimano Ultegra, braze-on
Rear DerailleurShimano Ultegra, 11-speed
ShiftersShimano Ultegra STI, 11-speed
CassetteShimano Ultegra, 11-28T, 11-speed
ChainKMC X11EL w/MissingLink, 11-speed


Brake LeversShimano R8020 STI
HeadsetACROS The Clamp integrated 1 1/8" top, 1 1/2" bottom
HandlebarZIPP Service Course 70 Ergo, 31.8mm
StemZIPP Service Course, 6061 3D-forged alloy, 31.8mm, +/- 6
SaddlePrologo Kappa RS, STN rails
* Specification subject to change, it may vary by country.


Size XS (48cm) S (51cm) M (54cm) L (57cm) XL (60cm)
Seat Tube Center To Center 450 480 497 532 566
Seat Tube Effective 480 510 530 560 590
Top Tube Center to Center 515 535 548 565 587
Head Tube Length 130 150 170 195 220
Seat Tube Angle 75° 74° 73.5° 73.25° 73°
Headtube Angle 71.5 72.5 73 73.5 73.5
Chainstay Length 405 405 405 405 405
Wheelbase 972 975 978 988 1007
Bottom Bracket Drop 69 69 69 69 69
Fork Offset 45 45 45 45 45
Trail 63 58 57 57 54
Stack 501 523 544 565 584
Reach 381 386 387 395 408
Stem 90 90 100 100 110
Handlebar Width 400 400 420 420 440
Crank 170 170 172.5 172.5 175
Wheel Size 700c 700c 700c 700c 700c
Seat Post Diameter N/A N/A N/A N/A N/A
* Geometry subject to change, it may vary by country.
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