Sorry! Specialized Sirrus 4.0 is no longer available.

Sirrus 4.0

£1,700.00
10 days free insurance available

Discover the latest Specialized mountain bikes with top-notch features. Shop now for quality bikes designed for off-road adventures. Ideal for all levels of riders.

FrameSpecialized FACT 9r carbon, Fitness Geometry, 12x142mm thru-axle, internal cable routing, flat-mount disc, Plug + Play fender mounts
ForkSpecialized FACT carbon, 12x100mm thru-axle, flat-mount disc, Plug + Play fender mounts
HandlebarsDouble-butted alloy, 9-degree backsweep, 31.8mm
Stem3D-forged alloy, 31.8mm, 7-degree rise
TapeSpecialized Body Geometry, lock-on, integrated bar ends, hidden 4/5mm hex key
Front BrakeTektro HD-R280, hydraulic disc, resin pads, flat-mount, 160mm
Rear BrakeTektro HD-R280, hydraulic disc, resin pads, flat-mount, 140mm
Shift LeversmicroSHIFT, 9-speed
Front DerailleurmicroSHIFT R9, 9-speed, 31.8mm clamp
Rear DerailleurShimano Sora, 9-speed
CassetteShimano Sora, 9-speed, 11-34t
CranksetShimano MT210-2, 2-Piece, 9-speed, 46/30T
Chainrings46/30T
Bottom BracketShimano 68mm threaded
ChainKMC X9, 9-speed w/ Missing Link™
Front HubAlloy, 6-bolt disc, sealed cartridge bearing, high-low flange, 12x100mm thru-axle, 28h
Rims700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h
Rear HubAlloy, 6-bolt disc, sealed cartridge bearings, high-low flange, 12x142mm thru-axle, 28h
SpokesStainless, 14g
Front TireRoadSport Reflect, Wire bead, Blackbelt/Endurant Casing, 700x32c
SaddleBody Geometry Power Sport, steel rails
Rear TireRoadSport Reflect, Wire bead, Blackbelt/Endurant Casing, 700x32c
SeatPostAlloy, 12mm offset, 2-bolt clamp, 27.2mm
Inner TubesPresta, 48mm valve
PedalsSpecialized Body Geometry Fitness, platform, plastic
Seat BinderIntegrated w/ frame

Please note: Manufacturers can sometimes change the specification of the products from time to time.

Size XXS XS S M L XL
B-B Drop 70 70 70 70 70 70
B-B Height 284 284 284 284 284 284
Bike Stand-Over Height 700 722 750 778 810 831
Chain-Stay Length 440 440 440 440 440 440
Fork Length (full) 395 395 395 395 395 395
Fork Rake/Offset 51 51 51 51 51 51
Front-Center 602 618 629 634 644 663
Head-Tube Angle 69.5 70 70 71 71 71
Head-Tube Length 111 125 143 169 186 208
Reach 355 371 376 382 386 398
Seat-Tube Angle 73.5 73.5 73.5 73.5 73.5 73.5
Seat-Tube Length 360 395 440 470 510 530
Stack 587 590 606 635 651 672
Top-Tube Length (horizontal) 529 549 559 573 581 599
Trail 78 75 75 68 68 68
Wheelbase 1033 1049 1060 1065 1074 1093

Lifetime warranty* to the original owner against structural defects in material or workmanship on ALL models of Specialized-branded frames and forks

  • Includes seatstays and chainstays on full-suspension bikes
  • Does not include suspension forks and suspension parts
  • Does not include paint and graphics (these are covered below)

* Register your bike, frameset, or Roval wheels within the first 90 days of purchase for a lifetime warranty to the original owner.

Read the full warranty here

When you purchase a bike from Specialized Concept Stores, you'll receive a complimentary tune-up service at your nearest store within 6 weeks of bike delivery.

This free service is designed to ensure that the bike you've chosen is operating optimally and to make any necessary adjustments, such as cable stretching, common with new bikes.

However, if you encounter any issues with your bike at any point, we strongly advise you to cease riding and promptly book your bike in for its complimentary service to ensure your safety and riding pleasure.

When you receive your bike, you'll be pleasantly surprised at how effortless it is to get it road-ready. We've designed the assembly process to be as straightforward as possible, so you can start enjoying your new ride without delays.

All you need to do is install the handlebars, pedals, and wheels. It's a quick and hassle-free process that requires no advanced technical skills. Our user-friendly instructions and included tools will guide you through each step, ensuring a smooth and secure assembly.

Whether you're an experienced cyclist or new to bike assembly, you can trust that the process will be a breeze. Within no time, your bike will be fully assembled, and you'll be ready to hit the road, trail, or bike path with confidence.

We offer 10 days free cover with all new bikes purchased, provided by our insurance partner VeloLife. You will be covered for the first 10 days of ownership against theft and accidental damage, so you can purchase with confidence.

Give yourself the comfort of no obligation free insurance, make sure you have peace of mind from the moment you leave the store. If anything happens to the bike in the first 10 days of ownership, know you are covered!

Cycle to Work Scheme: Affordable Riding for UK Employees

Unlock a cost-effective way to own the bike of your dreams through the Cycle to Work Scheme. This initiative, available to employees in the UK, lets you enjoy the benefits of cycling while saving on your bike purchase.

With the Cycle to Work Scheme, you can use your pre-tax salary to acquire a brand-new bicycle and essential cycling accessories. This means significant savings for you, as your salary sacrifice reduces both your income tax and National Insurance contributions.

The process is seamless: Choose the bike that suits your needs and budget from our extensive range. Your employer will then set up a salary sacrifice arrangement, spreading the cost of your bike over a specified period, typically 12 to 18 months.

Once the salary sacrifice period ends, you have the option to own the bike outright for a nominal fee, ensuring you get to keep and enjoy your trusted two-wheeled companion for years to come.

Experience the freedom of cycling, save money, and reduce your carbon footprint with the Cycle to Work Scheme. Join countless UK employees who have already embraced this eco-friendly and wallet-friendly way of commuting.