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JAVA NEO J-AIR 451 CB Carbon Fiber Tri-folding Bike

JAVA NEO J-AIR 451 CB Carbon Fiber Tri-folding Bike

The JAVA NEO J-AIR 451 CB is JAVA's flagship all-carbon fiber tri-folding small-diameter bike. It features an upgraded all-carbon frame based on the classic NEO tri-folding structure, paired with 451 (20-inch) wheels. It balances portability, lightweight design, and road racing riding experience,

HK$14,000.00
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1. Frame Structure

- Frame: T800 full carbon fiber unibody frame, three-section folding structure (head tube fold + bottom bracket fold + seat tube fold), hollowed-out aerodynamic tubing to reduce wind resistance and improve rigidity.

- Fork: One-piece carbon fiber disc brake fork.

- Rear Triangle: Full carbon chainstays/straps, superior shock absorption compared to aluminum alloy frames.

- Folded Dimensions: 68×34×65cm, easily fits in car trunks, subways, and elevators.

- Original Net Weight: Approx. 8.6–9.2kg (slightly varies depending on drivetrain configuration); the 105 drop handlebar version shown in the picture weighs approximately 9.5kg.

- Maximum Load Capacity: 140kg

- Suitable Height: 155–190cm (with retractable carbon seatpost and adjustable head tube)

2. Wheelset and Tires (451 specification)

- Wheel diameter: 451 (20 inches x 1 1/8), offering better traction and cruising speed compared to 349 wheels, with pedaling efficiency approaching that of a 22-inch road bike.

**Ring Size:** - Original rim: Lightweight aluminum alloy disc brake rim, 28-hole straight-pull spokes; the vehicle in the picture has been upgraded with high-profile carbon wheels.

**Tires:** Original Schwalbe One 451 racing slick tires, low rolling resistance, wear-resistant and puncture-resistant (same as the vehicle in the picture).

**Brake Specifications:** - Center-lock disc, 160mm discs front and rear.

3. Drivetrain (Original/Modified Versions)

- Drivetrain: Shimano 105 R7120 12-speed hydraulic disc brake handlebars

- Chainset: 105 hollow integrated single chainset 52T

- Cassette: 11–34T wide gear ratio cassette, suitable for both climbing and high-speed cruising

- Chain: Shimano 105 rust-resistant chain

4. Braking System

All models come standard with hydraulic disc brakes, providing stable braking and smooth feel in the rain; only the entry-level aluminum frame NEO model comes with cable disc brakes, while the J-AIR carbon fiber frame model uniformly features hydraulic disc brakes.

5. Handling and Saddle Components

- Original Handlebars: Carbon fiber straight handlebars; modified road drop handlebars (pictured) maintain aerodynamic riding posture.

- Seatpost: 31.6mm full carbon fiber telescopic seatpost, long travel adjustment friendly to all heights.

- Saddle: Lightweight carbon fiber sports saddle.

- Folding Accessories: Original magnetic folding clips, auxiliary parking casters (green casters on the frame shown in the picture).
  • JAVA-NEO-JAIR-451CB碳纖三摺車整車側面.jpg
  • JAVA J-AIR 451 CB 105電變傳動細節圖.jpg
  • JAVA NEO J-AIR 公路彎把車頭細節.jpg

Delivery Options

  • S.F. Express - S.F. - Business Station Pickup
  • S.F. Express - Store Pickup
  • S.F. Express - Circle K Store Pickup
  • S.F. Express - EF Locker Pickup

Payment Options

  • Alipay (HK)_SHOPLINE Payments
  • Apple Pay
  • Credit Card
  • PayPal & Credit Card
  • Bank Transfer
  • WeChat Pay
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