Fat Tire Bike

Heavy-Duty Electric Fat Tire Bike

Commercial platform built for fleets, regional brands, and municipal operators requiring stable traction across snow, sand, mud, and unpaved terrain. The 4.0-inch to 4.8-inch tire footprint distributes load over a wide contact patch, lowering ground pressure to 5–8 PSI. Integrated mid-drive or high-torque hub motor systems deliver sustained power under load, paired with heat-treated 6061 aluminum frames engineered for high cyclic fatigue resistance in wet-weather and corrosive environments.

Off-Road Fat Tire Bike

Engineered for extreme utility fleets and rugged terrain operations, this industrial-grade off-road fat tire e-bike combines a reinforced 6061-T6 aluminum alloy frame with high-traction 4.8-inch

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Folding Fat Tire Bike

The Folding Fat Tire Bike integrates all-terrain mobility with compact spatial efficiency, engineered for commercial fleets, rental operators, and regional brand owners. Built around a 6061 aluminum

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Snow Fat Tire Bike

The STB-E48 is engineered for high-traction utility across extreme environments, utilizing an oversized 26 x 4.8 tire footprint designed to distribute vehicle load and prevent sinking in deep snow or

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Beach Fat Tire Bike

The Beach Fat Tire Bike is engineered for stable traction and low ground pressure across unstable terrains such as coastal sand, snowpacks, and unpaved trails. Built around a hydroformed 6061

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Electric Fat Tire Bike

This platform is engineered for high-torque utility and heavy off-road traction. Built around a hydroformed 6061 aluminum alloy frame, the chassis integrates a sustained 750W-1000W brushless geared

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Fat Tire Mountain Bike

Heavy-duty all-terrain platforms engineered for low-traction environments. These builds utilize high-volume tires (4.0 to 4.8) running at reduced inflation pressures (8 to 15 PSI) to maximize contact

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Key Product Features

Low-Pressure Flotation:

26" x 4.0" / 20" x 4.0" high-volume casing absorbs high-frequency impacts and prevents sinking over soft substrates.

High-Torque Drivetrain:

Planetary gear hub or torque-sensing mid-drive motors engineered for continuous thermal stability under heavy inclines.

Sealed Electronics:

IP65-rated wiring harnesses, waterproof connectors (Julet/Higo), and bus-bar battery terminals preventing moisture ingress.

Payload-Rated Geometry:

Extended rear stays and gusseted head tubes supporting total payloads up to 180 kg (rider and equipment).

Thermal-Managed Braking:

180mm/203mm stainless steel rotors paired with dual-piston hydraulic calipers for sustained heat dissipation during heavy descents.

Technical Specifications

Parameter	Specification
Frame Material	6061-T6 Double-Butted Aluminum Alloy
Motor Options	48V 750W Bafang M620 Mid-Drive (160Nm) / 48V 500W Brushless Geared Hub
Battery Capacity	48V 17.5Ah / 20Ah (Lithium-ion cells: Samsung/LG/Panasonic)
Tire Specifications	Kenda / CST 26" x 4.0" 60TPI with puncture-resistant nylon breaker
Braking System	Tektro HD-E350 Hydraulic Disc, 2.3mm thick rotors, motor cutoff sensors
Transmission	Shimano Altus/Deore 9-Speed or Enviolo internal gear hub
Suspension	Aluminum rigid fork or 120mm travel air-sprung inverted lockout fork
Max Payload	180 kg (Static & Dynamic tested per ISO 4210)
Operating Temp	-20°C to 45°C

Frame & Structural Design

Hydroformed 6061 aluminum tubing joined via automated TIG welding. Critical stress nodes—specifically the down tube-to-head tube junction and bottom bracket shell—utilize internal gussets and variable wall thicknesses (3.2mm at high-load nodes tapering to 1.8mm at low-stress spans) to mitigate fatigue cracking under dynamic loads. Dropouts are CNC-machined from solid 7075 aluminum plates to resist axle slippage under high motor torque. Frames undergo a 4-stage chemical pre-treatment and electrostatic powder coating with an 80–120 micron dry film thickness for salt-spray corrosion resistance.

Components & Configuration

Cockpit: Ergonomic lock-on grips, 720mm 6061-T6 aluminum riser handlebar, waterproof TFT display (UART/CAN communication protocol).

Electrical Subsystem: Sinewave controller with programmable current limiting (25A–30A), integrated 1000-lumen LED headlight powered via main bus, and DC-DC step-down converter.

Contact Points: Wide polyurethane-foamed saddle with chromoly rails; forged alloy seatpost (30.4mm diameter, 3.0mm wall thickness).

Drivetrain Hardware: Sealed cartridge bearing bottom bracket, forged aluminum crank arms (170mm), anti-rust chain (KMC e9 series).

Applications

Winter Utility & Commuting:

Snow-packed urban transport and municipal maintenance patrols.

Coastal & Desert Tourism:

Eco-resort rental fleets operating in abrasive sand and salt-air conditions.

Agricultural & Industrial Site Transport:

Facility monitoring, vineyard management, and construction perimeter patrols without soil compaction.

Last-Mile Delivery:

High-payload delivery operations across unpaved and adverse weather zones.

Customization Options

Electrical Tuning: Firmware programming for regional speed and power thresholds (e.g., 25 km/h EU EPAC compliance vs. 32 km/h / 45 km/h US Class 2/3 limits).

Power Architecture: Dual-battery parallel configurations yielding ranges exceeding 120 km.

Branding & Aesthetics: Frame geometry adaptations, pantone-matched powder coating, laser-etched headtube badges, and molded private-label battery casings.

Cargo Hardware: Front/rear heavy-duty aluminum racks (welded tubular construction, 25kg/50kg load ratings), integrated child seats, and pannier mounts.

OEM & ODM Manufacturing

Prototyping:

3D CAD modeling, finite element analysis (FEA) stress testing, and CNC-machined rapid prototyping within 15 days.

Tooling:

In-house mold design for frame extrusion dies, plastic injection shrouds, and custom battery housing enclosures.

Traceability:

Laser-etched frame serial numbers linked to component batch logs from raw alloy coil to final packaging.

Production Capacity:

4 automated assembly lines with a monthly output capability of 8,000 units.

Quality Control

Incoming Material Inspection: Spectral analysis of aluminum raw materials; voltage, internal resistance, and capacity grading of 100% incoming lithium cells.

In-Process Testing: Wheel-truing automated tension checks, torque-wrench calibration verification every 2 hours, and electrical insulation resistance testing.

Finished Goods Testing: 100% end-of-line dyno testing assessing motor output, shifting smoothness, sensor response, and brake pressure holding.

Destructive & Durability Testing: Frame drop testing, fork fatigue cycling per EN 15194 standards, and salt spray corrosion testing (ASTM B117, minimum 500 hours).

Packaging & Shipping

Knock-Down (SKD) Configuration: 85% pre-assembled unit secured within a 7-layer double-wall corrugated export carton (BC-flute).

Protection Elements: EPE foam molded inserts lock the front fork, handlebars, and frame rails to prevent transit vibration damage. Battery units ship in separate UN 3481 certified dangerous goods boxes.

Container Loading:
• 20ft GP Container: Approx. 70–80 units (SKD 85%)
• 40ft HQ Container: Approx. 175–190 units (SKD 85%)

MOQ & Lead Time

Minimum Order Quantity (MOQ):

• Standard Configuration: 50 units per model (mixed colors allowed).
• Custom OEM/ODM Specification: 200 units per model.

Standard Lead Time:

• Sample Production: 15–20 days.
• Bulk Production: 35–45 days upon deposit receipt and pre-production graphic/specification sign-off.

FAQ

Q: What international electrical safety certifications do your batteries and chargers carry?

A: All battery packs use cells compliant with UL 1642 / IEC 62133. Complete battery assemblies are tested and certified to UL 2849 and EN 50604-3. Chargers include CE, FCC, UL, or SAA certifications mapped to destination market requirements.

Q: How is frame structural integrity validated during manufacturing?

A: Every frame design undergoes structural testing per ISO 4210 and EN 15194 standards, covering horizontal fatigue, vertical force fatigue, and falling weight impact tests. Destructive batch testing is executed quarterly on production line samples.

Q: Can motor controller parameters be adjusted for local street-legal speed limits?

A: Yes. Controllers use programmable firmware via CAN/UART protocols. Maximum speed, throttle activation parameters, and pedal-assist levels (PAS) are locked to match target regional frameworks (e.g., EN 15194 or US Title 16 CFR Part 1512) prior to factory dispatch.

Q: What is the standard warranty policy for B2B commercial buyers?

A: Coverage includes 3 years on the aluminum frame, 2 years on the motor and battery management system (BMS), and 1 year on electronic controllers, displays, and hydraulic components. Replacement parts are dispatched under standard warranty claims backed by photographic or diagnostic log verification.

Q: What is the shipping protocol for bulk lithium-ion battery loads?

A: Lithium-ion batteries exceeding 100Wh are classified as Class 9 Dangerous Goods (UN 3481). We manage complete export documentation, including MSDS, DG declarations, and specialized outer packaging compliance for ocean freight or air cargo.

Q: How is component traceability managed if a field defect occurs?

A: A unique QR/barcode is laser-etched onto every bottom bracket shell. Scanning this code retrieves the exact production batch, welding operator ID, battery cell serial numbers, motor lot number, and final QA test log from our production database.

Request a Quote

To initiate a technical review, request sample units, or discuss custom OEM/ODM specifications for your distribution network, provide your project requirements below:
Target Market / Regulatory Standard (e.g., EU, North America)
Estimated Order Volume (Units per batch / Annual forecast)
Customization Level (Standard catalog specs vs. Frame/Motor modifications)
Target Delivery Port or Destination Zip Code

As one of the leading fat tire bike manufacturers and suppliers in China, we warmly welcome you to wholesale high-grade fat tire bike from our factory. All customized bikes are with high quality and competitive price.