Unicorn: TD3 / 58cm / Arctic Sunrise / Sram 1×13


We build plenty of bikes with standard drivetrains from Sram, Shimano, and Campagnolo, but sometimes we like to build something more interesting, creative, and functional. We are Rodeo Labs after all, and there’s a lot of fun to be had by cooking off-menu.

This beautiful Arctic Sunrise TD3.1 is built with a terrific of Easton, DT Swiss, Repente, Praxis, and Sram, but the real magic of the build comes from the Ratio Technology 13 speed conversion kit that allows the Apex 1 shifter to be converted from 11 to 13 speeds. Instead of being limited to a 10-42 x 11 speed cassette, this bike now has a Campagnolo Ekar 13 speed 9-42 cassette. That cassette has a wider range than the newest Sram XPLOR drivetrain, and it has closer shifting ratios thanks to its advantage of 13 speeds over XPLOR’s 12 speed. Moreover, this unique solution is significantly less expensive than anything that can be built using XPLOR.

This bike would be perfect for gravel riding, gravel racing, road riding (with slick tires), and it would be a hoot for mild singletrack when shod with larger tires. The gear ratios we built it with will allow for healthy top speeds when roads are fast, but it will also climb well thanks to that excellent 38-42 climbing gear ratio.

This bike is in-stock and can ship or be picked up immediately.

In stock


ModelTraildonkey 3.1 + Spork 3.0
FinishArctic Sunrise
Frame DecalsNone
HandlebarEaston EA70 AX / 42cm / 16D
StemEaston EA70 / 7D / 100mm
HeadsetFSA Orbit ITA
Headset comp. plugIncluded
Headset spacersCarbon
SeatpostEaston EA70 / 0mm SB / 27.2
Dropper leverNone
Seatpost clampIncluded
SaddleSelle Repente Quasar 1.1b / Rodeo / 142mm / SS
Bar TapeBlack anti-slip
Shift / Lever – FrontSRAM Apex 1 HRD
Shift / Lever – RearSRAM Apex 22 HRD
Shifter only – FrontNone
Shifter only – RearRatio 1×12 Wide / rear exit
Front DerailleurNone
FD band clampNone
Rear DerailleurSRAM Apex1 Rear Der.
CranksetPraxis Alba X / 175mm
ChainringRatio 13sp 110BCD 38t
PowermeterCane Creek 3boltDM to 5bolt110 Spider
Bottom BracketPraxis T47 / 68mm / external / M30
ChainCampagnolo Ekar / 13s
Brake Caliper – FrontSRAM Apex HRD / Flat Mount
Brake Caliper – RearSRAM Apex HRD / Flat Mount
Brake adapter – FrontIncluded
Brake adapter – RearRodeo / flat mount rear / 160mm
Brake Line – FrontIncluded
Brake Line – RearIncluded
Shift housing / cablesBlack
Axle – FrontRodeo Axle 3.0 / 12 x 100mm
Axle – RearRodeo Axle 3.0 / 12 x 142mm
Axle – Lever3.0 Lever / 6mm hex
Battery charger 
Battery 1 
Battery 2 
Battery mount 
Shift switch 1 
Shift switch 2 
Di2 Bluetooth 
Junction A 
Junction B 
Di2 ST-R wire 
Di2 ST-L wire 
Di2 Dfly wire 
Di2 JxnB wire 
Di2 Battery wire 
Di2 RD wire 
Di2 FD wire 
Rim FrontDT Swiss G 540 Rim – 700c
Rim RearDT Swiss G 540 Rim – 700c
Hub FrontRodeo 2.0 / 28h / 12×100 / dark gray
Hub RearRodeo 2.0 / 24h / 12×142 / XDR / dark gray
SpokesSapim Race, 2.0/1.8, black
NipplesBrass, black
BuildBuilt in the USA
ValveTubeless, black
Rim TapeWTB
Tire SealantOrange Seal
Tire frontPanaracer GravelKing SK / 700 x 43 / black
Tire rearPanaracer GravelKing SK / 700 x 43 / black
Rotor frontCampagnolo Ekar / centerlock / 160mm
Rotor rearCampagnolo Ekar / centerlock / 160mm
CassetteCampagnolo Ekar / 13s / 9-42