Ride Anything. Stop at Nothing.

Fat bikes were built for the terrain that stops every other bike. Oversized tyres measuring 3.8" to 4.8" wide float over snow, grip through sand, and roll confidently across loose gravel, mud, and roots — surfaces that would swallow a standard mountain bike whole.

At Silverback Bikes, we've engineered our fat bike range from the ground up: lightweight alloy frames with tapered headtubes, internal cable routing, short chainstays for agile handling, and drivetrain options from entry-level Shimano Deore all the way to SRAM SX Eagle 12-speed. Not sure if a fat bike is right for you? Read our guide on why to choose a fat bike before diving in.

What Is a Fat Bike?

A fat bike is a bicycle designed with exceptionally wide tyres — typically 3.8" to 5.0" — mounted on wide rims, run at very low tyre pressures (often 5–15 PSI). This combination creates a massive contact patch with the ground, delivering traction and float that no standard tyre can match.

Originally developed for Alaskan snow racing, fat bikes have evolved into one of the most versatile categories in cycling. Today they're ridden year-round: on snow-covered trails in winter, sandy beaches in summer, muddy forest paths in autumn, and rocky singletrack in spring. If you want one bike that handles every season and every surface, a fat bike is the answer.

Tyre width: 3.8" to 5.0" (vs. 2.0"–2.6" on a standard MTB)
Rim width: 60–100mm internal
Tyre pressure: 5–15 PSI (vs. 25–35 PSI on MTB)
Frame: Wide rear dropout spacing (170mm–197mm) to accommodate fat tyres
Geometry: Stable, confidence-inspiring, often with short chainstays for agility

Buying Guide — How to Choose Your Fat Bike

1. Frame Material

All Silverback fat bikes use hydroformed alloy frames — a manufacturing process that shapes aluminium tubing into complex, optimised profiles that are both lighter and stiffer than standard round-tube construction. The result is a frame that absorbs trail vibration without sacrificing pedalling efficiency.

Our premium Synergy Fat takes this further with a full-carbon frame, saving significant weight while adding the natural vibration-damping properties that carbon fibre is known for.

2. Tyre Width — 4.0" vs. 4.7" vs. 4.8"

Tyre width is the single biggest factor in how a fat bike performs:

4.0" tyres (e.g. Scoop Sport with VEE Mission Command 4.0"): Faster rolling, more efficient on hardpack and gravel, lighter overall weight.
4.7" tyres (e.g. SE:Series Fat Adventure, SE:Series Fat Explorer with Bulldozer 4.7"): The sweet spot for all-terrain riding. Excellent float on snow and sand.
4.8" tyres (e.g. SilverRider Fat): Maximum float and traction. Ideal for dedicated snow, sand, and extreme off-road use.

3. Rigid Fork vs. Suspension Fork

Rigid alloy fork (SE:Series Fat Deluxe, SE:Series Fat Adventure): Lighter weight, lower maintenance. Best for trail riding, bikepacking, all-season commuting.

Carbon fork (SE:Series Fat Single, SE:Series Fat Explorer): Lighter than alloy, additional vibration damping. Best for longer rides and mixed terrain.

Suspension fork (Scoop SX, SE:Series Fat SX with Bluto fork): Active suspension travel for technical terrain and aggressive trail riding.

Full suspension (Synergy Fat — 120mm front / 110mm rear IDS Revo): Maximum comfort and control on rough terrain year-round.

4. Drivetrain — 1x10 to 1x12 Speed

All Silverback fat bikes run 1x drivetrains — the modern standard for simplicity, reliability, and wide gear range:

1x10 Shimano Deore (SE:Series Fat Deluxe, SE:Series Fat Delight): Reliable, proven, excellent value
1x11 Shimano (SE:Series Fat Adventure): Wider gear range, smoother shifts
1x12 Shimano Deore (SE:Series Fat Single, SE:Series Fat Explorer): Best-in-class range for steep climbs and fast descents
1x12 SRAM SX Eagle (Scoop Sport, Scoop SX, SE:Series Fat SX): SRAM's wide-range 12-speed system with a 50T cassette

5. Electric Fat Bikes — S-Electro & SilverRider

For riders who want to extend their range or tackle bigger climbs, our electric fat bike range combines all-terrain capability with powerful mid-drive motor assistance. Read our full comparison of electric vs. non-electric fat bikes to find the right fit.

S-Electro Diamond Fat Sport (€2,799): Shimano EP7000 motor, 504Wh internal battery, 4.0" tyres
S-Electro Diamond Fat Explorer (€4,499): 720Wh internal battery, 4.7" tyres, dropper post, oversized cockpit
SilverRider Fat (€4,299): S-TEC motor unit, 820Wh removable battery, 4.8" tyres, dropper post, integrated rear lights, recycled alloy frame. Also featured in our guide to the best electric fat bikes in 2026.

The Silverback Fat Bike Lineup

Entry Level

Scoop Sport — from €699: 1x12 SRAM SX drivetrain, SBC Carbon fork, 26" VEE Rubber Mission Command 4.0" tyres. Rated to 120kg.

SE:Series Fat Deluxe — from €899: 1x10 Shimano Deore, SBC rigid alloy fork. Available in Spring Lime/Olive Green.

SE:Series Fat Delight — from €899: Single front chainring, wide-range cassette. Available in Charcoal/Ice Blue.

SE:Series Fat Adventure — from €999: Bulldozer 4.7" tyres, 1x11 drivetrain, Shimano hydraulic disc brakes. Available in Satin Matt Tangerine.

SE:Series Fat Adventure #2 — from €899: Bulldozer 4.7" tyres, internal cable routing, short chainstays. Available in Metallic Emerald.

Mid Range

SE:Series Fat Single — from €1,399: Shimano Deore 1x12, carbon fork, 4.7" tyres, rack/fender/kickstand mounts. Available in Cammo Green to Spring Lime.

SE:Series Fat Explorer — from €1,399: Shimano Deore 1x12, carbon fork, 4.7" tyres, full accessory mounts. Available in Rainbow Pearl.

Scoop SX — from €1,599: Suspension fork, 1x12 SRAM SX Eagle. Available in Navy/Light Blue and Charcoal/Forest Green.

SE:Series Fat SX — from €1,599: SRAM SX Eagle 1x12, Bluto suspension fork. Available in Satin Matt Watermelon Red/Gloss Maroon.

Premium

Synergy Fat — from €3,699: Full-suspension carbon fatbike, 120mm front / 110mm rear IDS Revo suspension. Available in Rainbow Pearl in M and L.

Accessories for Your Fat Bike

Complete your setup with our range of fat bike fenders and mudguards — essential for all-season and wet-weather riding. We also stock compatible racks, cranksets, and tyres purpose-built for fat bike geometry.

Use Cases — Which Fat Bike Is Right for You?

Winter & Snow Riding: At 5–10 PSI, a 4.7" or 4.8" tyre floats over packed snow and grips through loose powder. Read our full guide on the best fat bike for winter riding. Best picks: SE:Series Fat Adventure, SE:Series Fat Explorer, SilverRider Fat.

Beach & Sand: Low tyre pressure creates a wide footprint that floats over soft sand. Find out more in our article are fat bikes good on sand? Best picks: SE:Series Fat Delight, SE:Series Fat Adventure.

Trail & Singletrack: Wide tyres add confidence on roots and rocks. Best picks: Scoop SX, SE:Series Fat SX, Synergy Fat.

Bikepacking & Touring: Fat bikes with rack/fender/kickstand mounts are ideal for loaded adventure riding. See our guide on the best fat bike for bikepacking. Best picks: SE:Series Fat Explorer, SE:Series Fat Single, SilverRider Fat.

E-Fat Biking: Extend your range and tackle bigger climbs with electric assistance. Best picks: S-Electro Diamond Fat Explorer, SilverRider Fat.

All-Season Commuting: A fat bike handles rain, mud, and light snow. Best picks: Scoop Sport, SE:Series Fat Deluxe.

Frequently Asked Questions

What tyre pressure should I run on a fat bike?
For most off-road riding, 5–15 PSI is the standard range. Snow and sand riding benefits from the lower end (5–8 PSI) for maximum float. Hardpack trail riding can go slightly higher (10–15 PSI) for better rolling efficiency.

Can I ride a fat bike on normal roads?
Yes. Fat bikes roll fine on tarmac, though they are slower and require more effort than a road or gravel bike. For mixed-use riding, a 4.0" tyre like the Scoop Sport is a better choice than a 4.7" model.

What is the difference between a fat bike and a mountain bike?
The primary difference is tyre width. A fat bike runs 3.8"–5.0" tyres at very low pressure; a mountain bike typically runs 2.0"–2.6" tyres at 25–35 PSI. Fat bikes excel on snow, sand, and loose terrain where MTB tyres would sink or lose traction.

Do I need a suspension fork on a fat bike?
Not necessarily. Fat tyres at low pressure absorb a significant amount of trail vibration. A rigid carbon fork combined with 4.7" tyres at 8–10 PSI provides a surprisingly comfortable ride.

Are Silverback fat bikes tubeless compatible?
Several models in the range are tubeless-ready. The SilverRider Fat comes with tubeless wheels as standard. Check individual product pages for tubeless compatibility details.

What size fat bike do I need?
All Silverback fat bikes are available in S, M, L, and XL. As a general guide: S fits riders up to approximately 170cm, M fits 170–180cm, L fits 180–190cm, and XL fits 190cm+.

Can I add a rack and fenders to a fat bike?
Yes — several Silverback fat bikes include rack, fender, and kickstand mounts as standard. Browse our fat bike fender collection for compatible options.

What is the weight limit for Silverback fat bikes?
The Scoop Sport is rated to 120kg. Weight limits for other models are listed on individual product pages.

How do electric fat bikes differ from standard fat bikes?
Electric fat bikes add a mid-drive motor (Shimano EP7000 or S-TEC) and an integrated battery (504Wh–820Wh), providing pedal assistance up to 25 km/h (EU legal limit). The trade-off is additional weight, typically 5–8kg heavier than a comparable non-electric model.

What is the range of the SilverRider Fat's 820Wh battery?
In Eco mode on mixed terrain, an 820Wh battery can deliver 80–120km of range. In Turbo mode on steep climbs, expect 40–60km. The battery is removable for convenient indoor charging.

VEE Bulldozer Fat 4.7 bike Tyre