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2026 Radon

R1 Tiagra

An aluminum frame gravel bike with mid-range components and shimano tiagra hydraulic disc brakes.
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Manufacturer Price

€1,199($1,395)
Weight21.3 lbs  
FrameAluminum
SuspensionRigid
ForkCarbon
Wheels700c Aluminum
Drivetrain2 × 10
Groupset105, Tiagra
BrakesShimano Tiagra Hydraulic Disc
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

39 mph

R1 Tiagra

36 mph

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Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Price History
Specs
Build
Frame

R1; Material: Aluminium, Max. width tire: 30mm, Hanger: #10240

ColorWhite / Deepblack

Fork

R1 Full Carbon

Headset

VP, IS42/IS52; Bearing dimensions:, Upper: MH-P08, 41.8x6.5mm, 45/45°, Lower: MH-P16, 52x7mm, 45/45°

Stem

LEVELNINE Race, 31.8mm; 50cm: 90mm, 53cm: 90mm, 56cm: 100mm, 58cm: 100mm, 60cm: 120mm, 63cm: 120mm

Handlebar

LEVELNINE Wing Race, 31.8mm; 50cm: 400mm, 53cm: 420mm, 56cm: 440mm, 58cm: 440mm, 60cm: 460mm, 63cm: 460mm

Saddle

Selle Italia Model X Superflow

Seatpost

LEVELNINE Race, 27.2 x 350mm

TypeRigid

Pedals

not included

Grips

RADON performance tape

Groupset
Rear Derailleur

Shimano TIAGRA RD-4700-GS, 10-speed

Front Derailleur

Shimano 105 FD-R7000, clamp-on

Crank

Shimano TIAGRA FC-4700, 50/34T; 50cm: 170mm, 53cm: 172,5mm, 56cm: 172,5mm, 58cm: 175mm, 60cm: 175mm, 63cm: 175mm

Shifters

Shimano TIAGRA ST-4720, 2x10

Cassette

Shimano CS-HG500-10, 11-34

Chain

Shimano CN-HG54

Brakes

Shimano TIAGRA BR-R4770, flat-mount

TypeShimano Tiagra Hydraulic Disc

Wheels
Rims

Alexrims ATD560; Rim height: 30mm, Inner width: 19mm, Tubeless ready: ✔, Tubeless valves: not included, Tubeless tape: 21-22mm, not included, Tubeless milk: not included

Spokes

Pillar CDB1415 ED black

Front Hub

Joytech Disc D981 12/100mm, 6-bolt

Rear Hub

Joytech Disc D982 12/142mm, 6-bolt

Tires

Continental Grand Prix, 28" x 30mm

Rider Notes
Riders Also Viewed

First added March 28

Last updated May 16