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Sierra Bike
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Our unique in-house assembly operation allows you to order exactly the bike that you want with a 30% price reduction over the individual parts.

Price for individual parts purchase: 1.950€ / $2.245

• Easy Assembly with our 100% plastic-free recyclable packaging.

The new Fly Sierra bike is designed to be our fast and flowy bowl and trails machine, and now we have added the option of Magneto wheels to offer exactly the same bike that Sergio Layos and Josh Dove ride! It is built from an aftermarket Sierra frame, bars, and seat, all signed by Sergio. In addition, it's equipped with a full Ruben Alcantara signed line and Volcano steering parts. The Sierra Bike is a top-of-the-line transition trails bike.

Hand-assembled to order at the Fly warehouse and fully customizable following these steps:

1. Select the bike you want using the options available on the website.
2. Proceed with the order confirmation.
3. For any specific part change, just write in the comments the part you’d like to replace.
4. Confirm your order

- Parts with higher price: 30% discount to the individual price difference.
- Upcharge Payment: Once the order is confirmed, we´ll send you a link to proceed.
- If the chosen part is not available, we´ll inform you the delivery info.
- No refunds are issued for parts of lower value.

Note: LHD (Left-Hand Drive) and RHD (Right-Hand Drive) refer to the side where the drivetrain is located to protect your chain & sprocket when you grind.
RHD: Riders that mostly grind with the pegs on the left side.
LHD: Riders that mostly grind with the pegs on the right side.

SPECIFICATIONS

Sierra Bike Specs
  • GEOMETRY:
  • TOP TUBE LENGTH
    20.6 / 21” / 21.4"
  • CHAIN STAY LENGTH
    13.6”
  • HEAD TUBE ANGLE
    75º
  • SEAT TUBE ANGLE
    71º
  • BB HEIGHT
    11.5”
  • STAND OVER HEIGHT
    8.75"
  • FORK OFFSET
    32 / 33 mm.
  • BAR RISE
    8.5" / 9"
  • BAR WIDTH
    29”
  • BAR BACKSWEEP
    10º
  • BAR UPSWEEP
  • _
  • SPECIFICATIONS:
  • Frame
    Sierra / Full 4130 CrMo / Heat treated HS, BB / Invest Casting Heat Treated Dropouts / EBS brake system
  • Fork
    Volcano 33mm Offset / Full 4130 CrMo / 1 Piece Steerer Tube CNC / Invest Casting Heat Treated dropouts
  • Bars
    Sierra / Full 4130 CrMo / Multiple Butted
  • Grips
    Ruben 2 / 160 mm Long
  • Stem
    Volcano 25mm Rise / 50mm Reach / CNC Machined / 6061-T6 Aluminum
  • Headset
    Volcano 15 / Sealed Bearing / CNC Machined / 6061-T6 Aluminum
  • Lever
    None
  • Brake
    None
  • Cranks
    Dolmen 175 mm. / 4130 CrMo / 2.5p Construction / 1p Invest Casting Arm
  • Bottom Bracket
    Rotar Mid 24mm. / Sealed Bearing
  • Sprocket
    Tractor / CNC Machined / 7075-T6 Aluminum / 28T
  • Pedals
    Ruben Graphite / Nylon - Fiberglass Compound
  • Chain
    Tractor / 4130 CrMo Heat Treated / Hollow Pins Chromium Treatment / 74 Links
  • Tires
    Ruben Ligera 2.40 Front / Fly Ruben 2.25 Rear / 60 TPI / 120 PSI
  • Seat
    Sierra 3 Seat / 100% Synthetic Leather / 7 mm Thickness
  • Post
    Tripod / CNC Machined / 6061-T6 Aluminum / 180 mm Long
  • Rims
    Lunar Rear / Fly Lunar Lite Front / Double Wall / 6061-T6 Aluminum / Flash Welded
  • Front Hub
    Magneto / Sealed Bearing / 3/8” Alu Female Axle / 36H
  • Rear Hub
    Magneto / Sealed Bearing / 14mm Alu Female Axle / 36H / 9T
  • Weight 21" / 9" version
    10.56 kg. / 23.2 lb.
  • Disclaimer:
    Information provided is subject to change without prior notice. We are not liable for errors or omissions.
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