clearance

Steerer (grey ring) and handlebar (black ring).

Compatibility

Increases the size of the fork steerer from 1" to 1 1/8” and the handlebar from a diameter of 25.4 to 31.8 mm (oversize).

Adjustable Stem

Skill Level

Stem Type

Bike Stem, Posts & Clamps

Notch to hold the tire lever on the spokes, perfect grip on tire, deflation tip.

Ease of use

Tire lever that clips together for easy storage.

Compact design

Designed for removing your bike tire. The tip allows you to deflate the tire, while its edges attach to the spokes for greater ease.

Tire Assembly

Condition

PA66 polyamide material avoids breakage when bent.

Tyre lever features: 

Bike Tools

The fabric wicks away perspiration and dries quickly.

Moisture management

Pockets

Freedom of movement

Designed for those getting started with road cycling in warm weather.

Maximum wash temperature of 30°C. Very delicate cycle.

Closed Pocket

Frequency

Collar Type

Season

Number of Pockets

Weather Conditions

sleeve length

Waterproof

anti-uv

Pocket

Style

Zipper Type

Main Material

Air resistance refers to how air passes through the fabric: 482 L/m²/s
The higher the resistance, the more air flows through the material and the quicker perspiration dries on the skin, which slows the component’s saturation.

The speed of diffusion reflects the drying speed: 8.25 mm/s (1/3"/s)
The greater the diffusion, the faster the material dries, so it won’t become saturated.

Perspiration wicking

Machine wash at 30°C. Synthetic cycle. Turn the garment inside out. Do not add fabric softener. Hang dry in a warm, ventilated area. Do not tumble dry. Do not dry clean. Do not add bleach. Do not place on a heater to dry.

Care instructions

Our team of product designers based at the Btwin Village in Lille work continuously to make biking more comfortable for our users. Our obsession is to create products that meet the specific biking needs of our users and eliminate hindrances to a good biking experience.
We then test our products in the field, as we are convinced that subjecting them to real-world conditions, like the ones you experience on your bike, is the only way to continuously improve our products.

Product tests

Men's T-Shirts & Tank Tops

Vents and internal channels ensure continuous airflow.

Ventilation

A light, In-Mold helmet, 275 g in size M.

Weight

Easy dressing

Subject to the same ventilation testing as the Aerofit 900 helmet

Aerodynamics

Anatomic design

This variation on our Aerofit 900 helmet was designed with a brand-new adjustment system for added comfort.

Adjustable Helmet

Ventilation Zippers

Intensity

anti-insect grid

Weight (g)

helmet compatible with

protection technology

material of the exterior shell

type of chin guard

helmet shape

reflective

removable foams

number of aeration points

integrated lighting

Bluetooth Connection

Detachable Visor

Fastener Type

Sizes

Size M: 275 g (9.7 oz)
Size L: 330 g (11.6 oz)

Weight 

With in-mold technology, the external polycarbonate shell is moulded while expandable polystyrene (EPS) is injected. 
The resulting structure is harder, sturdier and extremely light. 
The inner EPS structure absorbs the energy of impact while the hard outer shell ensures durability.

In-mold technology and EPS

Make sure the helmet fits properly.

If not entirely satisfied, please return or exchange, according to our return policy, along with the instructions, labels and any original packaging so that it can be repurposed.

Return policy for cycling protective gear

Complies with standard EN 1078 for bikes, inline skates, and skateboards.
EN 1078 is a European standard for testing methods and requirements for cycling, skateboarding, and skating helmets.

This standard covers the following aspects: construction (including field of vision), shock absorption properties, retention system features (including the chinstrap and tightening devices) and marking and information.

What does the EN 1078 standard cover?

Helmets

onlyonline

For 22.2/25.4 and 28.6 mm headset and 1" and 1"1/8 (28.6 mm) stem.

Robustness

Designed for adapting a 1"1/8 Aheadset for a 1" damper system.

For a 1 1/8” (28.6 mm) steerer tube and oversized handlebars (31.8 mm).

Designed to improve your comfort and position when riding.

Practice Conditions

Length (mm)

Suitable for 1" 1/8 (28.6 mm) fork steerer tube and 1" 1/4 (31.8 mm) oversize handlebar.Torque the fork steerer tube to 8 Nm and the handlebar to 6 Nm.
6061 aluminum body, steel screws.
Weight: 134 g.


Technical information

lowest

1-1/8 headset and oversize 1-1/4 handlebar.

60° adjustment possible for an individually-adapted position.

Optimized posture

Designed for precisely adjusting the height of your riding position without changing the handlebar.
Handlebar diameter: 31.8 mm.

stem length

700x35 to 700x45 tires (28"). 48-mm valve.
ETRTO 35/45 – 622

Optimized composition to guarantee your inner tube has a good seal.

Compatible with 700 diameter tires, with a cross-section ranging from 35 to 45 and a 48-mm Presta valve.

Valve Type

Wheel Size

Self-Repair

Section

Etrto

Check the sidewall for tire information (diameter and width). For example, 27.5 x 1.90 means a tire with a 27.5” diameter that is 1.90” wide.
The dimensions in mm (ETRTO international unit) are also on the tire sidewall.
For example 50-584 means the tire is 50 mm wide with an inner diameter of 584 mm (or 27.5 x 1.90).

How to choose your inner tube

Remove the old inner tube using Btwin tire levers.

Removing an inner tube

Check the condition of your tire and replace it if necessary. 
Make sure no objects are lodged in the tire.
Check the condition of your tire rim strip.
A rim strip that’s even slightly bent can cause punctures.
Check that your rim doesn’t have any other issues that could damage your inner tube.

Checks to carry out before installing an inner tube

Watch our video before you start.
Pre-inflate the inner tube slightly to avoid pinching.
Make sure you’re using the correct valve for your rim and then insert it.
Put the entire inner tube inside the tire so that it fits inside the rim.
Take care not to pinch the inner tube when installing it.

Installing the inner tube

Start installing the tire at the valve.
Finish installing the tire across from the valve to avoid pinching the inner tube.
Never install your tire with a tool or a tire lever, as you risk pinching or puncturing the inner tube.

Installing the tire

Carefully inflate your tire to the pressure recommended by the manufacturer (visible on the tire sidewall in PSI or bars: 1 bar = 14.51 PSI).
Regularly check that your tire is in the correct position as you inflate it.

Inflating the tire

To avoid punctures from pinching and for the best tire performance, we recommend checking your tires and inflating them to the suggested pressure before every ride.

Pro tip

Weight:

Bike Tubes & Valves

Maximum pressure: 6 bar/87 PSI (MTB/hybrid/city/kids' bike)

Power

Clip connection. Reversible to fit different valves.

deflating mode

hose

type of connexion

number of compression tubes

inflation mode

Pressure Gauge

Tubeless compatibility (Tyre)

Sold In Set

Pressure (Bars & PSI)

Length (cm)

Pump Type

Clips onto the valve. Adapts to different valve types by removing and reversing the pump head.(See instruction manual).

Valve compatibility

Bike Pumps

Adjustable

Attaches using a 17 mm flat spanner or 8 mm Allen key.

Easy assembly/dismantling

Designed for parking a bike weighing no more than 25 kg (including baggage).

Assembly Type

Position

removable

Foldable

Maximum Load

Attachment

Attachment Type

Item Weight

Attaches near the chainset. A central plate provided for bikes without screw holes (sold with the product).

Where does it mount onto your bike?

Given the variety of bikes, frame shapes, and bottom bracket heights, we recommend asking our sales assistants for help.

What kind of bike is it for?

Bike Kickstand

For 700 x 25 to 700 x 32 inner tubes and 700 (28") wheels.

Provides excellent grip on trails (gravel) and road.

Grip

This tire’s tread reduces the risk of punctures on trails.

Puncture resistance

A highly durable gravel tire for training on roads and trails.32-mm width for added comfort.

tire width x wheel size

e-bike ready

Width (mm)

Tire Bead

Type of Tyre

tire compound type

tire sculpture

Bead Type

Playing Surface

Inspect the tread of your tires to measure wear and to know when they need to be replaced. Signs of wear include:
 - tread starting to fray
- the appearance of micro cracks
- low tread depth - 
the carcass becomes visible.
All of these indicate that the tire is worn and needs replacing.

How to measure tire wear

To remove your tire, start by deflating the inner tube completely.
Then separate the tire from the rim with a tire lever.

How to remove a tire

To put the tire back on, insert one side of the tire into the rim. Next, inflate your inner tube to approximately 30% before putting it into the tire (inflating it beforehand reduces the risk of pinching the inner tube). Then, insert the other side of the tire into the rim, starting on the side opposite the valve. Before inflating the inner tube all the way, check to make sure it isn’t pinched between the tire and the rim.

How to fit a tire

Inflate the tire with caution. The recommended pressure is indicated on the tire's sidewall and product sheet (available online).
Always make sure your tires are at the correct pressure before each outing.

How to inflate your tire correctly

During inflation, it is important to obtain the right pressure depending on the terrain and especially depending on the weather.
If you ride in rainy weather, feel free to lower the tire pressure to increase its grip.
When riding in dry weather, you can increase the pressure for better performance.

Advice from the professionals

Bike Tires

Optimal comfort with EVA Foamed + gel composition

User comfort

Length suitable for all road and gravel bike handlebars.

Developed to provide excellent grip and optimal comfort for long rides.

Bike Handles & Grips

For Btwin- and Shimano-compatible 7- to 9-speed drivetrains.

Designed for bikes with 8 or 9 speeds and a double or triple crankset.

Number of Speeds

Derailleur Position

Cage Plate Length

Cage length: Long.
Maximum teeth: 36 teeth
Min teeth:11 teeth
Steel body.

Features

Bike Derailleur

For Shimano, Sram, and Btwin 9-speed cassette bodies and chains

Designed for bikes equipped with cassette bodies and 9-speed chains.

Set of Teeth

Gears: 11-13-15-17-19-21-24-28-34.
11 x 34 teeth
385 g

Degrease, clean, and lubricate your cassette regularly to prolong life. Replacing the chain each time the cassette is replaced is recommended. Do not clean using high-pressure water jets.

Easy assembly with a cassette remover wrench, available on our website 
(ref: 8608966) and an adjustable or open-ended spanner.

Assembly

Easy disassembly with a cassette remover wrench, available on our website 
(ref: 8608966) and an adjustable spanner or open-ended spanner and a chain-whip tool.

decathlon

Aluminum Steering Spacers