Which size Ventoux is right for you?

Selecting the correct Ventoux Road box is a simple process of confirming your bike's dimensions against the box limits. Because road geometries are generally fairly consistent, we offer one primary box length with two different width options to accommodate varying cockpit setups.

Before starting measurement, confirm your bars can turn 101 degrees to the right. If they can't, you'll need to look at an Aubisque which allows you to mount your bike into the box with the bars straight, or a Tourmalet which requires removal of bars.

Step 1: Confirm your wheelbase (Measurement C)

Measurement C is the horizontal distance between the centre of your front axle and the centre of your rear axle. This is your wheelbase.

• The Ventoux accommodates a wheelbase between 905 mm and 1055 mm. The internal mounting is fully adjustable within this range, which covers the vast majority of standard road and gravel frames.

Step 2: Choose your width (Measurement D)

To ensure your bike is held securely without the shifters or bars touching the box walls, you need to select the correct width. Measurement D is the distance from the centre of your stem cap to an imaginary line at the furthest point your shifter hoods extend. We need this measurement as your bars turn 101 degrees to the right when mounted in the box.

• Choose the Standard width if Measurement D is 270 mm or less. This is suitable for most traditional road setups and integrated cockpits.
• Choose the Wide width if Measurement D is over 270 mm. This is specifically designed for bikes with larger bars or longer shifter hoods.

If your measurement is exactly 270 mm, we recommend selecting the Wide option to ensure there is plenty of clearance for your levers.

Additionally, a measurement worth taking but not shown is the width of your bars across the widest point (e.g. bar flares). This should be a maximum of 550 mm - however it's very rare that your bars will exceed this.

Step 3: Verify your height (Measurements A)

These measurements ensure your bike sits comfortably within the box once the lid is closed.

• Seat post height (Measurement A): This is the linear distance from the centre of your bottom bracket to the top of your seat tube (NOT including seat post or saddle). The maximum allowable height is 675 mm. If your seat tube is higher than this, or if you have an integrated seat post (ISP) that exceeds this limit, you will need to lower or remove the post for transit, or contact us for a custom heigh upper box section.

Step 4: Check your cockpit-to-axle measurements (Measurements B1 and B2)

Finally, check the cockpit-to-axle measurements to ensure the frame fits within the outer shell.

• B1: This is the linear distance from the centre of the front wheel axle to the top cap on the steerer tube. The maximum is 700 mm.
• B2: This is the linear distance from the centre of the front wheel axle to the highest point on the stem. The maximum is 675 mm.

Please note: while not shown on the measurement diagram, the width of your bars at the widest point (e.g. across the bar flares) should be no more than 550 mm.