1 1

BOLA 27.5 Fat Bike Carbon Wheelset | 85mm Wide, 79mm Internal, 3-Spoke

BOLA 27.5 Fat Bike Carbon Wheelset | 85mm Wide, 79mm Internal, 3-Spoke

$890.00 USD
$580.00 USD $890.00 USD
Sale Sold out
Free shipping  |  VAT included in EU & USA
Casstle
Weave

The Bola 27.5er 85mm T800 tri-spoke fat bike wheelset - a 27.5 inch, 85mm-external / 79mm-internal carbon fat wheelset with a 36T ratchet hub, for snow and sand.

Three broad blades floating on an 85mm hull - a fat bike wheelset built to skim over snow and sand like a stone on water.

Buying Guide.

Internal width - 79mm: 3.8-5.0 inch fat tyres at just 5-15 PSI for maximum flotation in snow and sand.

Use case: choose it for fat bike racing, winter snow and soft-sand rides; it is overbuilt for narrow-tyre road use.

Maintenance: the three moulded blades remove truing, trading repairability for stiffness and low upkeep.

Size comparison: the 26 inch T800 6-spoke fat wheelset ($490) is the cheaper, smaller alternative; this 27.5 inch set floats better.

Disc brake and fat-specific axles required; respect the system weight limit.

Target Audience & Usage Notes.

fat bike racing, snow and sand riding, and premium urban fat bikes.

Disc brake, 6-bolt or Center Lock; 12x100/12x142 axles; SRAM XDR / Shimano freehub selectable. 3.8-5.0 inch tyres at 5-15 PSI. 130kg system limit.

The Ride That Awaits.

At low pressure in fresh snow the wide bed lets the tyre balloon into a sled beneath you - you float, not roll, gliding over powder and sand as if the earth has softened.

There is no grip question, only going.

Free shipping and a 2-year wheelset warranty support the winter build.

Specifications
Size: 27.5
Carbon Grade: 待补充
Rim Depth: TBD
Bead Type: Hooked
Inner Rim Width: 79mm
Outer Rim Width: 85mm
Hub Model: 36T ratchet
Spoke: Carbon tri-spoke
Bearing Type: Enduro Steel bearing
Complete Wheelset Weight: 2000g (tape & valve excluded, ±2% tolerance)
Accessories: Tape, valve and spare spokes
Trade-offs & Considerations
Aero vs Crosswind: The three-molded-carbon-spoke disc smooths spoke drag versus 12-36 laced spokes, but at fat-bike speeds the gain is only about 1.5W; the 85mm external width is the main crosswind factor on open snow.
Weight vs Stiffness: At about 2000g per set the carbon tri-spoke build saves roughly 700-900g versus an alloy fat wheelset (+/-50g); the monocoque disc is very stiff laterally but trades vertical compliance, so the ride is firmer on repeated bumps.
Tire-Type Trade-off: The hooked bed runs clincher or tubeless tyres on the 79mm internal width, taking roughly 3.8-4.5in fat tyres; tubeless lets you run 5-15 PSI for traction but needs tape, valve and sealant.
Sourcing & Delivery Trade-off: Stock build ships in 1-3 business days at $890; custom decals or a built-to-order spec add 7-15 business days and roughly a $60-100 premium.
Config Ladder: The tri-spoke carbon disc is fixed and cannot be re-laced; the real upgrade path is the hub - a ceramic bearing service cuts about 1.0W of friction for around +$100, and a faster-engagement ratchet shortens pickup from 10 degrees.
Performance Test Data
Fatigue Test: 750,000 cycles @640N (ISO 4210-7 Annex A, informative only)
Impact Resistance: >40J (ISO 4210-7 reference)
Flatness: <0.25mm (internal QC)
Roundness: <0.3mm (internal QC)
Max Spoke Tension: >300kg (internal QC)
Ultimate Strength: >100kg (internal QC)
Dynamic Equilibrium: <3g (internal QC)
Radial Stiffness: 90–110 N/mm (internal lab)
Lateral Stiffness: 55-68N/mm
Max System Weight: 130kg
Recommended Use Cases
Gravel Racing: Excellent
Bikepacking: Good
Gran Fondo / Endurance: Good
Road Racing: Not recommended
Training / Daily Riding: Suitable
Not Recommended For: Road racing, high-speed paved descents, and applications requiring narrow tires
Compatibility
Frame Compatibility: Fat bike frames compatible with 27.5" (ISO 594mm) wheels and disc brakes
Tire Type: Tubeless-ready fat bike tires
Tire Width Range: 3.8-5.0 inches (based on 79mm internal width)
Brake Standard: Disc, 6-bolt or Centerlock
Axle Standard: 12x100mm(F)/12x142mm(R)
Drivetrain: Compatible with Shimano/SRAM 8-11 speed cassettes
Rotor Standard: 6-bolt or Centerlock
How It Compares
ModelHubSpokeBearingWeightDepthWidthPrice
T800 Tri-Spoke 36T ratchet Carbon tri-spoke N/A 2000 N/A 85mm see store
Model A N/A N/A N/A N/A N/A 80mm ~$800
Model B N/A N/A N/A N/A N/A 100mm ~$950
Model C N/A N/A N/A N/A N/A 85mm ~$900
FAQ
What terrain is this wheelset built for?
It is tuned for snow, sand and loose gravel where flotation matters: fat-bike racing, endurance rides over soft ground and premium all-weather fat bikes.
How quick is the hub engagement?
The 36-tooth ratchet provides about 10 degrees of engagement, giving immediate power pickup on snowy climbs and when accelerating out of corners.
What tyre pressure and tubeless setup do I need?
The 79mm internal width runs roughly 3.8-4.5in tyres at 5-15 PSI; the tubeless-ready bed lets you lower pressure and use sealant to cut pinch flats.
How does the tri-spoke design affect maintenance?
The three molded carbon spokes eliminate truing and spoke-tension checks and raise torsional stiffness, but a damaged disc cannot be re-laced and must be replaced.
How much does the wheelset weigh?
About 2000g per set (tape and valve excluded, +/-2% tolerance), which is roughly 700-900g lighter than a comparable alloy fat wheelset.
Warranty & Shipping
Bearing Type: Enduro Steel bearing
Freehub Body: HG / XDR / XD
Complete Wheelset Weight: 2000g (tape & valve excluded, ±2% tolerance)
Accessories: Tape, valve and spare spokes
Warranty Period: 2 years
Crash Replacement: 30% discount on replacement parts
Processing Time: 1–3 business days (standard stock); 7–15 business days (custom)
Estimated Delivery: 7–15 business days (standard); 3–5 business days (expedited)
View full details