The Doppler offers riders a traditional brevet and touring bike with smooth-rolling 650B tires that can venture into the dirt for those off-road excursions. While gravel riding is the latest trend, 650b wheels have been a well-kept secret within the brevet community for decades! 650b offers a distinct advantage by offering a larger-volume tire to provide both greater cushion and traction on rough roads. The smaller- diameter 650b rims also provide a stronger wheel which is ideal for loaded touring or harsh conditions. Compared to the Inversion and Radar the Doppler frame offers a more classic road bike geometry while still offering a high level of functionality with a wide-range drivetrain and frame features.

KEY FEATURES:
4130 steel frame and fork with semi-compact geometry
Shimano Tiagra 2x10
FSA Omega crankset 48-32 crankset with 11-34t cassette
TRP HYRD mechanically actuated hydraulic disc brake
WTB Horizon 650bx47 tires and WTB STi23 rims

TECHNICAL SPECIFICATIONS
SIZES
Semi-Compact: 49cm, 52cm, 54cm, 56cm, 58cm, 60cm

COLOR(S)
Aurora black

FRAME
Breezer butted-chromoly steel, 44mm headtube, BSA Threaded BB, 142 x 12mm

FORK
Chromoly disc, 1 1/8", rack / fender & side bottle mounts, 100 x 12mm through-axle

CRANKSET
Oval 300, 48/32T

BOTTOM BRACKET
Praxis BSA M24

PEDALS
N/A

FRONT DERAILLEUR
Shimano Tiagra

REAR DERAILLEUR
Shimano Tiagra

SHIFTERS
Shimano Tiagra, 2x10-speed

CASSETTE
Shimano, HG500, 11-34T, 10-speed

CHAIN
Shimano CN-4601 10-speed

WHEELSET
650B WTB ST Light i23 disc, tubeless compatible, 14g SS spokes, 32H

TIRES
WTB Venture TCS Tubeless Ready, 650 x 47c, folding bead

BRAKESET
Tektro HY/RD C hydraulic disc, 160mm rotor

BRAKE LEVERS
Shimano Tiagra

HEADSET
FSA 1 1/8", No.10 ZS44

HANDLEBAR
Breezer B-Road, 6061 alloy, 31.8mm clamp, 133mm drop

STEM
Breezer B-Road, 3D-forged 6061 stem body, +/-7°

TAPE
Breezer Texture Plus, made from recycled material

SADDLE
WTB Volt Comp 142x265, steel rail

SEATPOST
Breezer, 6061 alloy, 27.2mm diameter