Specialized Sirrus X 4.0 2026 - Hybrid Sports Bike
- Future Shock 1.5 delivers 20mm of compliance to give maximum comfort and control over the rough stuff.
- Added Carbon Fork and an A1 SL alloy frame delivers a build 1.6lb (.8kg) lighter than the 3.0 model–no heavy hybrid featuring a mountain style suspension fork comes close.
- Wide-range 1x11 Shimano CUES shifting delivers precise shifting.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | Specialized A1SL Premium Aluminum, Fitness Geometry, butted tubing, internal cable routing, flat-mount disc, quick-release, Plug + Play rack/fender mounts |
| Fork | Specialized FACT 9r Carbon Monocoque, flat-mount disc, 12x100mm thru-axle, low rider mounts, Plug + Play fender mounts, Future Shock 1.5 |
| Stem | Future Stem, Comp |
| Bars | Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm |
| Front Brake | Shimano BR-MT200, hydraulic disc, 160mm |
| Rear Brake | Shimano BR-MT200, hydraulic disc, 160mm |
| Brake Lever | Shimano BR-MT200 |
| Rear Mech | Shimano Cues 11-speed w/ Shadow Plus |
| Shifters | Shimano Cues SL-U6000, 11-Speed |
| Speed | 11 |
| Rims | 700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h |
| Front Hub | Alloy, sealed cartridge bearings, Center Lock, 12x100mm thru-axle, 24h |
| Rear Hub | Alloy, Center lock Disc, High-Low Flange, Sealed Cartridge Bearing, 32H, 12mm Axle, 142mm Spacing |
| Spokes | Stainless, 14g |
| Front Tyre | Pathfinder Wirebead Fast Gravel 700X40C |
| Rear Tyre | Pathfinder Wirebead Fast Gravel 700X40C |
| Seat Post | Alloy, 2-bolt, 14mm offset, 27.2mm |
| Saddle | Body Geometry Power Sport, steel rails |
| Chainset | Prowheel Alloy, XXS - XS: 165mm, S - M: 170mm, L - XL: 175mm |
| Bottom Bracket | Threaded BSA 68mm, 24mm spindle |
| Chain | KMC eGlide for 11-Speed Cues |
| Cassette | Shimano, CS-LG400-11, Cues, 11-Speed, 11-50T |
| Pedals | Specialized, platform |
Specialized Sirrus Size Chart
| Frame Size | Height (cm) | Height (in) |
| XXS | 142 - 150 | 4' 8" - 4' 11" |
| XS | 150 - 158 | 4' 11" - 5' 2" |
| S | 155 - 165 | 5' 1" - 5' 5" |
| M | 165 - 175 | 5' 5" - 5' 9" |
| L | 175 - 183 | 5' 9" - 6' 0" |
| XL | 183 - 193 | 6' 0" - 6' 4" |
| XXL | 193 - 198 | 6' 4" - 6' 6" |
What size frame do I need if I am between sizes? - read here
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Specialized Sirrus X 4.0 2026 - Hybrid Sports Bike
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