F-A-V4PRO

Aluminum Folding Fat Ebike Frame - V4 Pro

Aluminum Alloy Hardtail Frame Technical Specifications: Model: A-HL-B1

Material: Premium Aluminum Alloy (e.g., Al-6061 / Al-7005), T4/T6 Heat Treated
Frame Type: Hardtail (Front Suspension Compatible)
Wheel Size Compatibility: 27.5" / 29" / 27.5"+ (Plus Size)
Available Sizes: S (15") / M (17") / L (19") / XL (21")

Note: Highly compatible with both standard mechanical drivetrains and hub motors for PAS Ebikes.

Rear Hub Spacing (O.L.D. - Over Locknut Dimension):
- Standard QR: 135mm
- Boost Thru-Axle: 148x12mm (Recommended for modern E-MTB/MTB)
- Super Boost: 157x12mm
Dropout Type:
- Thru-Axle: P12 x P1.5 / P1.75 thread pitch, replaceable derailleur hanger (Provides higher rigidity for electric hub motors/mid-drive high torque).
- Slotted / QR: 10mm open slot for standard Quick Release or solid axle hub motors.

Headset Type: Tapered (ZS44/IS52 or ZS44/ZS56) — Compatible with heavy-duty Ebike front forks.
Bottom Bracket (BB) Shell:
- Standard: BSA Threaded (68mm 73mm) — Perfect for standard mechanical cranksets or Bafang/Tongsheng mid-drive PAS motors.
- Optional: Integrated Mid-Drive Motor Mount (e.g., for Bosch, Shimano, or Bafang M510/M600) if configured for PAS EBIKES.
Seatpost Diameter: Ø30.9mm or Ø31.6mm (Dropper post internal routing ready)
Seat Clamp Diameter: Ø34.9mm

Brake Mount Type: Post Mount (PM 160mm / 180mm direct rotor mount)
Drivetrain Compatibility: 1x Max 36T (Single Chainring optimized) / 2x Compatible
Rear Derailleur Hanger: Forged Aluminum, Replaceable (UDH - Universal Derailleur Hanger compatible optional)

Cable Routing: Full Internal Cable Routing (ICR) for derailleur and brake cables.
E-Bike Integration Ports: * Reserved internal routing ports for Display , Throttle, and Controller wiring.
- Down tube features optional integrated/semi-integrated Battery Pack mounting rivets (Compatible with Hailong/Shark style battery brackets or fully internal downtube battery).

Safety Standard: ISO 4210-M (Mountain Bicycles Safety Requirements)
E-Bike Ready Test: EN 15194 certified (Fatigue and impact tested to handle E-MTB stress).