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KOOTU R03 Carbon Road Bike Shimano Sora 18 Speed

KOOTU R03 Carbon Road Bike Shimano Sora 18 Speed

Regular price $1,349.00 USD
Regular price $1,865.33 USD Sale price $1,349.00 USD
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Size Chart

Recommend size chart:

Size cm inch
48cm 155-165cm 61''-65''
52cm 166-175cm 65.4''-68.9''
54cm 176-185cm 69.3''-72.8''
56cm 186-190cm 73.2''-74.8''

For reference only, for specific size requirements, please check the frame size drawing for measurement before placing an order.

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KOOTU R03 carbon road bike 700C wheel racing bike adult bike with Shimano Sora r3000 18 speeds

Quick detail:

  • T800 carbon fiber frame, fork, seat post
  • SHIMANO SORA R3000 9*2=18 Speed
  • 9.8kg (21lb) lightweight bike
  • Wind tunnel design
  • 700*25C Continental tires and KMC chain

Bicycle components:

Frame Size: 47cm/51cm/54cm/56cm
Wheel Size: 700C
Color:  Red/Grey


Frame Material: Carbon fiber
Fork: Carbon fiber 700C*100 (fork open)
Handlebar: Aluminum, 420*31.8mm
Stem: Aluminum 31.8*28.6*100mm, -7°degree
Fork bearing: 28.6*41.8-52*39.8mm
Saddle: YBT Road Bike Saddle
Seat Post: Carbon fiber 350mm

Derailleur / Brake System:

Shift lever: Shimano Sora ST-R3000-L + Shimano Sora ST-R3000-R
Front Derailleur: Shimano Sora FD-R3000
Rear Derailleur: Shimano Sora RD-R3000
Brakes calipers: Tektro R313 V-brake 39-52MM
Flywheel: Sunrise Cassette 11-25T
Crank sets: Prowheel Ounce-421C 34/50T*170mm, BB68

Transmission Control System:

Chain: KMC Z9
Pedal: SANYUN LP-658A 9/16'

Wheelset System:

Wheelset: Aluminum, 700C*1.5 14G*24H,F/V(Width 14mm /Height 36mm)
Hub: 14G*20H M9*100*108/ 14G*24H M10*130*140
Tires: 700x25C Continental Ultra Sport
Accessories: Multi Assemble tools, User Manual

The standard brake setting is Left hand control front brake, Right hand control rear brake, if you want to change, please let us know.

Shift/Brake Lever

The Sora ST-R3000 shift/brake lever has braking and shifting functions and allows easy operation.

Front Derailleur

The SORA R3000 front derailleur provides lighter 2x9 speed shifting thanks to its long arm design.

Rear Derailleur

SORA Medium Cage Rear Derailleur 9-speed. Using shadow design, thinner assembly structure provides a more streamlined integrated fit. The pulley maintains consistent distance to the cassette for increased shift stability.

Dual Pivot Road Caliper Brake

Tektro R313 road caliper brake adopts a dual-pivot design to increase braking force and achieve the best braking performance.


R-AL6061 ED 14G*20H M9*100*108 /14G*24H M10X130X140 The front hub keeps the wheel spinning freely, and the rear hub allows you to coast or freewheel. Sealed cartridge bearings protect the hub’s inners from dirt and water.


Gel inserts provide additional support to prevent the pinching of soft tissues while also cradling the sit bones in a comfortable position on the saddle.

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