Which size Tourmalet is right for you?

Finding the right Tourmalet size is a straightforward three-step process based on your bike's specific geometry. As our most compact box, the Tourmalet requires you to remove your wheels, bars, seat post and pedals for travel, and is available in three different heights.

Step 1: Measure your seat tube height (Measurement A)

Measurement A is the linear distance from the centre of your bottom bracket to the top of your seat tube. Do NOT include your seat post or saddle in this measurement, as these are removed for packing.

• Choose the Low height for a seat tube height up to 620 mm.
• Choose the Mid height for a seat tube height up to 660 mm.
• Choose the High height for a seat tube height up to 695 mm.

Step 2: Check your cockpit-to-axle measurements (Measurements B1 and B2)

These measurements ensure your frame fits within the length of the box at the height you have selected. B1 is the linear distance from the centre of the front wheel axle to the top cap on the steerer tube. B2 is the linear distance from the centre of the front wheel axle to the highest point on the stem.

If you chose the Low height:

• Measurement B1 (front) should be a maximum of 645 mm.
• Measurement B2 (rear) should be a maximum of 625 mm.

If you chose the Mid height:

• Measurement B1 (front) should be a maximum of 690 mm.
• Measurement B2 (rear) should be a maximum of 665 mm.

If you chose the High height:

• Measurement B1 (front) should be a maximum of 725 mm.
• Measurement B2 (rear) should be a maximum of 705 mm.

Step 3: Confirm your wheelbase (Measurement C)

Measurement C is the total distance between the centre of your front and rear axles. Every Tourmalet box is designed to accommodate a wheelbase between 935 mm and 1055 mm. This range covers the vast majority of modern road, time trial, and gravel bikes.