VelopediaBicycle Archive · Specification report

2021 Specialized Sirrus 3.0 Step Through

Velopedia Archive ID 900004311

Overview

Model year2021
BrandSpecialized
ModelSirrus 3.0 Step Through
Bicycle typeHybrid
Archive ID900004311
Original MSRP$1,200.00
ColorsSatin Maroon / Gloss Maroon / Satin Black Reflective
SizesXS; S; M

Frameset

Frame constructionSpecialized A1 Premium Aluminum, Fitness Geometry, butted tubing, internal cable routing, flat-mount disc, quick-release, Plug + Play rack/fender mounts
Frame materialAluminum
ForkSpecialized FACT Carbon, QR, Flat-mount Disc
Fork materialCarbon Fiber

Drivetrain

ShiftersmicroSHIFT, 9-speed
Front derailleurmicroSHIFT R9, 9-speed, 31.8mm clamp
Rear derailleurShimano Sora, 9-speed
CranksetChainrings: 50/34T
Bottom bracketShimano 68mm threaded
BB shell width68 mm
CassetteShimano Sora, 9-speed, 11-34t
ChainKMC X9, 9-speed w/ Missing Link™
PedalsSpecialized Body Geometry Fitness, platform, plastic

Brakes

Brakes(F) Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 160mm / (R) Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 140mm

Cockpit & contact points

HandlebarDouble-butted alloy, 9-degree backsweep, 31.8mm
StemSpecialized, 3D-forged alloy, 4-bolt, 7-degree rise
SaddleBridge Sport, Steel rails, 155/143mm
SeatpostAlloy, 12mm offset, 2-bolt clamp, 27.2mm

Wheels & tires

Hubs(F) Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h / (R) Alloy, 6-bolt disc, 8-/9-speed freehub, loose ball bearing, quick-release, 32h
Rims700C disc brake, double-wall alloy, 22mm depth, 21mm internal width
SpokesStainless, 14g
Front tireRoadSport Reflect, Wire bead, Blackbelt/Endurant Casing, 700x32c
Rear tireRoadSport Reflect, Wire bead, Blackbelt/Endurant Casing, 700x32c

Geometry · XS

Seat tube395 mm
Effective top tube557 mm
Head tube139 mm
Head-tube angle70°
Seat-tube angle73.5°
Chainstay / rear center440 mm
Wheelbase1058 mm
Bottom-bracket drop70 mm
Bottom-bracket height272 mm
Reach393 mm
Stack555 mm
Standover height620 mm
Fork offset / rake51 mm
Front center628 mm
Trail70 mm
Fork length / axle-to-crown395 mm
Seatpost length300 mm
Crank length170 mm
Stem length70 mm
Handlebar width580 mm

Geometry · S

Seat tube450 mm
Effective top tube567 mm
Head tube147 mm
Head-tube angle70°
Seat-tube angle73.5°
Chainstay / rear center440 mm
Wheelbase1068 mm
Bottom-bracket drop70 mm
Bottom-bracket height272 mm
Reach400 mm
Stack563 mm
Standover height620 mm
Fork offset / rake51 mm
Front center637 mm
Trail70 mm
Fork length / axle-to-crown395 mm
Seatpost length350 mm
Crank length170 mm
Stem length80 mm
Handlebar width600 mm

Geometry · M

Seat tube500 mm
Effective top tube584 mm
Head tube175 mm
Head-tube angle71°
Seat-tube angle73.5°
Chainstay / rear center440 mm
Wheelbase1077 mm
Bottom-bracket drop70 mm
Bottom-bracket height272 mm
Reach408 mm
Stack593 mm
Standover height625 mm
Fork offset / rake51 mm
Front center646 mm
Trail64 mm
Fork length / axle-to-crown395 mm
Seatpost length350 mm
Crank length170 mm
Stem length90 mm
Handlebar width600 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 26, 2026.