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Fly Sierra 3 Frame
£369.95
After another amazing year for Sergio Layos, Fly have only made a few small changes to make his signature frame even better. Sergio has decided to make the move back to a 75° head tube angle, The frame features internal & external gussets, multi-butted & tapered tubing, an Investment Cast seat post clamp with the Horizontal Cut System, removable EBS style brake mounts & Investment Cast Dropouts with integrated chain tensioners! section Product Specs

Material: 4130 Chromoly HEAD TUBE ANGLE: 75° SEAT TUBE ANGLE: 71° CHAIN STAY LENGTH: 13.6" BB

Height: 11.5" WHEEL

Size: 20" STANDOVER

Height: 8.75" DROPOUT

Size: 14mm HEADSET TYPE: Integrated BB TYPE: Mid BRAKE MOUNTS: Removable GYRO TABS: Drilled WEIGHT: 2.300kg / 5 lb (21") section Product Highlights Nuetral Geometry for responsiveness & stabilty Great all round frame for all types of riding Multi Butted & Gusseted Tubing For Added Strength Investment Cast Seat Post Clamp Integrated Chain Tensioners To Keep Your Wheel In Place shogun-image-section









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Archived Product
image missing
Fly Sierra 3 Frame
£369.99
After another amazing year for Sergio Layos, Fly have only made a few small changes to make his signature frame even better. Sergio has decided to make the move back to a 75° head tube angle, The frame features internal & external gussets, multi-butted & tapered tubing, an Investment Cast seat post clamp with the Horizontal Cut System, removable EBS style brake mounts & Investment Cast Dropouts with integrated chain tensioners! section Product Specs

Material: 4130 Chromoly HEAD TUBE ANGLE: 75° SEAT TUBE ANGLE: 71° CHAIN STAY LENGTH: 13.6" BB

Height: 11.5" WHEEL

Size: 20" STANDOVER

Height: 8.75" DROPOUT

Size: 14mm HEADSET TYPE: Integrated BB TYPE: Mid BRAKE MOUNTS: Removable GYRO TABS: Drilled WEIGHT: 2.300kg / 5 lb (21") section Product Highlights Nuetral Geometry for responsiveness & stabilty Great all round frame for all types of riding Multi Butted & Gusseted Tubing For Added Strength Investment Cast Seat Post Clamp Integrated Chain Tensioners To Keep Your Wheel In Place shogun-image-section









...
Archived Product
image missing
Fly Sierra 3 Frame
£369.99
After another amazing year for Sergio Layos, Fly have only made a few small changes to make his signature frame even better. Sergio has decided to make the move back to a 75° head tube angle, The frame features internal & external gussets, multi-butted & tapered tubing, an Investment Cast seat post clamp with the Horizontal Cut System, removable EBS style brake mounts & Investment Cast Dropouts with integrated chain tensioners! section Product Specs

Material: 4130 Chromoly HEAD TUBE ANGLE: 75° SEAT TUBE ANGLE: 71° CHAIN STAY LENGTH: 13.6" BB

Height: 11.5" WHEEL

Size: 20" STANDOVER

Height: 8.75" DROPOUT

Size: 14mm HEADSET TYPE: Integrated BB TYPE: Mid BRAKE MOUNTS: Removable GYRO TABS: Drilled WEIGHT: 2.300kg / 5 lb (21") section Product Highlights Nuetral Geometry for responsiveness & stabilty Great all round frame for all types of riding Multi Butted & Gusseted Tubing For Added Strength Investment Cast Seat Post Clamp Integrated Chain Tensioners To Keep Your Wheel In Place shogun-image-section









...
Available
image missing
Fly Sierra 3 Frame
£369.99
After another amazing year for Sergio Layos, Fly have only made a few small changes to make his signature frame even better. Sergio has decided to make the move back to a 75° head tube angle, The frame features internal & external gussets, multi-butted & tapered tubing, an Investment Cast seat post clamp with the Horizontal Cut System, removable EBS style brake mounts & Investment Cast Dropouts with integrated chain tensioners! section Product Specs

Material: 4130 Chromoly HEAD TUBE ANGLE: 75° SEAT TUBE ANGLE: 71° CHAIN STAY LENGTH: 13.6" BB

Height: 11.5" WHEEL

Size: 20" STANDOVER

Height: 8.75" DROPOUT

Size: 14mm HEADSET TYPE: Integrated BB TYPE: Mid BRAKE MOUNTS: Removable GYRO TABS: Drilled WEIGHT: 2.300kg / 5 lb (21") section Product Highlights Nuetral Geometry for responsiveness & stabilty Great all round frame for all types of riding Multi Butted & Gusseted Tubing For Added Strength Investment Cast Seat Post Clamp Integrated Chain Tensioners To Keep Your Wheel In Place shogun-image-section









...
Available
image missing
Fly Sierra 3 Frame
£369.99
After another amazing year for Sergio Layos, Fly have only made a few small changes to make his signature frame even better. Sergio has decided to make the move back to a 75° head tube angle, The frame features internal & external gussets, multi-butted & tapered tubing, an Investment Cast seat post clamp with the Horizontal Cut System, removable EBS style brake mounts & Investment Cast Dropouts with integrated chain tensioners! section Product Specs

Material: 4130 Chromoly HEAD TUBE ANGLE: 75° SEAT TUBE ANGLE: 71° CHAIN STAY LENGTH: 13.6" BB

Height: 11.5" WHEEL

Size: 20" STANDOVER

Height: 8.75" DROPOUT

Size: 14mm HEADSET TYPE: Integrated BB TYPE: Mid BRAKE MOUNTS: Removable GYRO TABS: Drilled WEIGHT: 2.300kg / 5 lb (21") section Product Highlights Nuetral Geometry for responsiveness & stabilty Great all round frame for all types of riding Multi Butted & Gusseted Tubing For Added Strength Investment Cast Seat Post Clamp Integrated Chain Tensioners To Keep Your Wheel In Place shogun-image-section









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Available
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Fly Sierra 3 Seat
Brown
£39.99
When it comes to the look of the bike, Sergio Layos is very specific about his setup & likes to focus on the details! The Sierra Tripod seat is key to that look. With a slim, ergonomic design, it really helps give a bike a clean & simple look with a sewn flybikes logo on the back! section Product Specs TYPE:  Tripod PADDING:  Slim WEIGHT: 217g ...
Available
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Fly Sierra Frame
£255.99
BMX Legend & Battle of Hastings regular  Sergio Layos' signature frame. Replacing the  Trueno & built for his type of riding style specifically, the brand new Sierra frame, from the ground up is built for speed & style, with classic looks, .. .. ...
Archived Product
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Fly Sierra Seat
£31.99
Sergio is very specifc about his bike, unlike other guys the smallest details are really important to him, everything has to be tight, no rattles & especially how his bike look’s. One of the key parts that he’s super particular about has alw.. .. ...
Archived Product
image missing
Fly Sierra Seat
£31.99
Sergio is very specifc about his bike, unlike other guys the smallest details are really important to him, everything has to be tight, no rattles & especially how his bike look’s. One of the key parts that he’s super particular about has always been his seat, the look, the angle & design. So Fly gave Sergio the opportunity to design his own, with a refined slim foam shape & clean look we bring you the Sergio Layos Sierra signature seat, that functions as amazingly as it looks. ...
Available
Fly Sion BMX Bike 2018
Fly Sion BMX Bike 2018
£479.99
The Sion BMX from Fly is inspired by team rider Courage Adams & is fully loaded with great parts & innoation which we hae come to know & love from Fly. The Sion is built around a responsive full 4130 frame & is laoded with Fly signature parts like the Roey 2 Stem, Devon Smilie Tripod seat, Fuego tires & Ruben pedals. The rest of the parts are taken care of by Fly & Trebol & nothing has been over-looked
- theres even 2x Nylon hub guards. section Product Specs FRAME

Material: Full 4130 Chromoly WHEEL

Size: 20" TOP TUBE LENGTH: 21" CHAIN STAY LENGTH: TBC HEADTUBE ANGLE: TBC SEAT TUBE ANGLE: TBC FORKS: BARS: Full Chromoly STEM: Fly Roey 2 Alloy Top Load HEADSET: Sealed Integrated BRAKE MOUNTS: Removable BRAKES: Fly Springhanger U-Brake FRONT HUB: Trebol Bueno Sealed FRONT RIM: Fly Pyramide Double Wall REAR HUB: Trebol Sealed Cassette 9t REAR RIM: Fly Pyramide Double Wall TYRES: Fly Fuego 2.3 SPROCKET: Fly Tractor 25t CRANKS: Trebol 3pc 4130 Chromoly 175mm BB: Sealed Mid PEDALS: Ruben Graphite SEAT: Fly Devon 2 Tripod GEARING: 25/9 WEIGHT: 24.9lbs / 11.3 Kgs




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Available

Fly Sierra 3 Frame Flat Black / 21"

After another amazing year for Sergio Layos, Fly have only made a few small changes to make his signature frame even better. Sergio has decided to make the move back to a 75° head tube angle, The frame features internal and external gussets, multi-butted and tapered tubing, an Investment Cast seat post clamp with the Horizontal Cut System, removable EBS style brake mounts and Investment Cast Dropouts with integrated chain tensioners! section Product Specs MATERIAL: 4130 Chromoly HEAD TUBE ANGLE: 75° SEAT TUBE ANGLE: 71° CHAIN STAY LENGTH: 13.6" BB HEIGHT: 11.5" WHEEL SIZE: 20" STANDOVER HEIGHT: 8.75" DROPOUT SIZE: 14mm HEADSET TYPE: Integrated BB TYPE: Mid BRAKE MOUNTS: Removable GYRO TABS: Drilled WEIGHT: 5lbs section Product Highlights Neutral Geometry for
responsiveness and stability Great all round frame for all types of riding High-quality Chromoly construction Gusseted tubing for added strength Built in chain tensioners shogun-image-section
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    • Availability: In Stock
    • Supplier: Sourcebmx
    • SKU: 31217087742063
    Availability: In Stock
    £359.99
    Description Reviews / Comments Add New

    Product Description

    After another amazing year for Sergio Layos, Fly have only made a few small changes to make his signature frame even better. Sergio has decided to make the move back to a 75° head tube angle, The frame features internal & external gussets, multi-butted & tapered tubing, an Investment Cast seat post clamp with the Horizontal Cut System, removable EBS style brake mounts & Investment Cast Dropouts with integrated chain tensioners! section Product Specs
    Material: 4130 Chromoly HEAD TUBE ANGLE: 75° SEAT TUBE ANGLE: 71° CHAIN STAY LENGTH: 13.6" BB
    Height: 11.5" WHEEL
    Size: 20" STANDOVER
    Height: 8.75" DROPOUT
    Size: 14mm HEADSET TYPE:  Integrated BB TYPE:  Mid BRAKE MOUNTS:  Removable GYRO TABS:  Drilled WEIGHT: 5lbs section Product Highlights Neutral Geometry for responsiveness & stability Great all round frame for all types of riding High-quality Chromoly construction Gusseted tubing for added strength Built in chain tensioners shogun-image-section

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    Black - A colour which does not emit any colour of the spectrum. Black absorbs all frequencies of the spectrum.
    weight - A measure of the force applied on an object by gravity. Measured metric in grams and kilos or imperial in lbs and oz
    Year - The time it takes the planet earth to orbit the sun. This takes around 365.25 days.
    Quality - An object that has quality is superior in function and finish than a less quality object.
    Size - is the measurement of how big an object is in space.
    Small - something that takes up less space than normal.
    Year - 365 days (366 days in a leap year), the time taken for planet earth to make one full revolution around the sun.
    Head - The upper part of a body typically separated by the neck.

    Supplier Information

    Sourcebmx
    Ride in style with Source BMX (https://www.sourcebmx.com/). Explore a vast selection of BMX bikes, parts, accessories, and apparel for riders of all levels. With top brands and expert advice, Source BMX ensures you have everything you need for your next session. Elevate your BMX experience and unleash your passion for riding with Source BMX.
    Page Updated: 2026-01-29 13:55:46

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