Specialized Sirrus Alloy Disc 2020 - Hybrid Sports Bike

Specialized Sirrus Alloy Disc 2020 - Hybrid Sports Bike

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Product Description

Take your fitness adventure to the next level. The Specialized Sirrus Alloy is a hybrid sports bike that combines a comfortable and efficient cycling position with the all-weather stopping power of hydraulic disc brakes.

Key Features:

  • A1 Premium aluminium frame is lightweight and robust
  • Steel fork with rack and mudguards mounts
  • Shimano Tourney 3x8 speed drivetrain for a wide gear range
  • Hydraulic disc brakes for consistent stopping power in all-weathers
  • Sizes: Small, Medium, Large, X Large
  • Colour: Charcoal/Red/Black
  • The Specialized Alloy Disc is available with 0% APR finance
Specialized Sirrus review

If you're going to get in shape, you need to move, and nothing wants to help you move faster than our Sirrus with powerful hydraulic disc brakes. It takes a no-nonsense approach to its design, giving you everything that you need, like superior braking, and nothing that you don't.

It's constructed from a durable, reliable, and lightweight A1 SL Premium Aluminium, and it features a reliable set of components that are built to withstand years of daily abuse, hydraulic disc brakes that provide reliable stopping power in any condition, and comforting Body Geometry touch points that are sure to take the sting out of long rides. Complacency just met its match.

Working with our Body Geometry team, we designed a frame that strikes the optimal balance between comfort and efficiency. The A1SL Premium Aluminium construction pairs weight savings with rugged durability, while the rack, fender, and disc mounts give you an incredibly versatile package.

A steel, straight blade fork provides a responsive ride, while the fender and rack mounts give you the option to install rain-fighting fenders and racks that can transport your gear around town.

Promax F1 hydraulic disc brakes are spec'd on this Sirrus to ensure consistent, powerful braking.

All Tredz bikes are:

  • Fully built & ready to ride
  • Fully checked & tested by Cytech qualified mechanics
  • Available with 0% APR finance on baskets over £99
  • 365 day no hassle returns
  • Free delivery in the UK Mainland on a date that suits you

In the box with every Tredz bike is:

  • Free Tredz 9 key trail tool
  • Free Tredz pedal spanner
  • Free basic pedals
  • Tredz drawstring kit bag
  • 16 point quality control check sheet
  • Basic bike setup instructions
  • Free Cycle Plan insurance voucher (8 weeks)

Occasionally, without notice, manufacturers change product design and/or specifications.


Frame:Specialized A1 SL Premium Aluminum, Fitness Geometry, fully-manipulated butted tubing, internal cable routing, flat mount disc, QR, rack & Plug + Play fender mounts
Fork:Steel, flat mount disc, 1-1/8" steerer, QR, rack & Plug + Play fender mounts
Stem:7-degree, 31.8mm clamp
Bars:Double butted alloy, 9-degree backsweep, 31.8mm
Front Brake:Promax F1, hydraulic disc, flat mount, 160mm rotor
Rear Brake:Promax F1, hydraulic disc, flat mount, 140mm rotor
Front Mech:Shimano Tourney, top swing, 31.8mm clamp
Rear Mech:Shimano Altus, 8-Speed
Shifters:Shimano Altus, RapidFire Plus w/ gear display
Rims:700C disc, double wall
Front Hub:Alloy, 6-bolt disc, loose ball bearing, QR, 32h
Rear Hub:Alloy, 6-bolt disc, 8/9-speed freehub, loose ball bearing, QR, 32h
Spokes:Stainless, 14g
Front Tyre:Specialized Nimbus Reflect 700x32mm, 26 TPI, wire bead, w/ Flak Jacket protection
Rear Tyre:Specialized Nimbus Reflect 700x32mm, 26 TPI, wire bead, w/ Flak Jacket protection
Seat Post:Alloy, 12mm offset, 2-bolt clamp, 27.2mm
Chainset:Shimano Tourney, 3-piece, 48/38/28T, steel
Bottom Bracket:BSA, 68mm, square taper
Chain:KMC X8, 8-speed w/ Missing Link™
Cassette:Shimano Altus, 8-speed, 11-32t
Pedals:Specialized Body Geometry Fitness, platform, plastic