Meet the New 240 EXP Hubs!

What's New?

New freehub system - Ratchet EXP (first available on the top tier 180S). Compared to the old 240 with the original Star Ratchet system (still used in 350S), the revamped 240 is lighter, stiffer, easier to maintain, more durable, and engages faster.

Modern look - 240 EXP has modified flange dimensions, but its effect on the spoke lengths left and right is minimal for most rims. As for the appearance, the old 240 has a glossy finish with removable logo stickers, while the 240 EXP has a matte finish with non-removable waterslide decals. The overall shape of the hub and even the end caps has been modernized.

dt-swiss-240-exp-straightpull-road-hubs-actual-weight.jpeg

What's New?

New freehub system - Ratchet EXP (first available on the top tier 180S). Compared to the old 240 with the original Star Ratchet system (still used in 350S), the revamped 240 is lighter, stiffer, easier to maintain, more durable, and engages faster.

Modern look - 240 EXP has modified flange dimensions, but its effect on the spoke lengths left and right is minimal for most rims. As for the appearance, the old 240 has a glossy finish with removable logo stickers, while the 240 EXP has a matte finish with non-removable waterslide decals. The overall shape of the hub and even the end caps has been modernized.

dt-swiss-240-exp-straightpull-road-hubs-actual-weight.jpeg

Star Ratchet VS Ratchet EXP

The star ratchet system requires two conical springs to push two ratchets against each other. The teeth of ratchets are well oriented so that they engage in one direction while sliding over each other with the teeth tip to tip when freewheeling. Ratchet EXP is the 2.0 version of this simple, elegant, and time-tested system.

old-dt-swiss-240s-star-ratchet-freehub-system.png

Star Ratchet VS Ratchet EXP

The star ratchet system requires two conical springs to push two ratchets against each other. The teeth of ratchets are well oriented so that they engage in one direction while sliding over each other with the teeth tip to tip when freewheeling. Ratchet EXP is the 2.0 version of this simple, elegant, and time-tested system.

old-dt-swiss-240s-star-ratchet-freehub-system.png
new-dt-swiss-240s-ratchet-exp-freehub.png

The key improvement of the Ratchet EXP system is fewer moving parts. It removes one spring by fixing the inboard ratchet into the ring that threads into the hub shell.

The reduced number of components contribute to weight loss but also the increased axle stiffness as the bearing width is maximized. The drive-side bearing moves outboard and sits inside the threaded ring. EXP freehubs are in both regular bearings and ceramic. 180 hubs come with ceramic and 240 come with regular stainless steel bearings but they are interchangeable.

The key improvement of the Ratchet EXP system is fewer moving parts. It removes one spring by fixing the inboard ratchet into the ring that threads into the hub shell.

The reduced number of components contribute to weight loss but also the increased axle stiffness as the bearing width is maximized. The drive-side bearing moves outboard and sits inside the threaded ring. EXP freehubs are in both regular bearings and ceramic. 180 hubs come with ceramic and 240 come with regular stainless steel bearings but they are interchangeable.

new-dt-swiss-240s-ratchet-exp-freehub.png

With the inner ratchet fixed and easily aligned with the outboard ratchet, the new system has faster full engagement (both ratchets are 100% engaged). The surface pressure is reduced so there will be less wear between parts. The hubs feel really solid under power because there are no pawls flexing as with a traditional design.

For the old 240, there are three ratchet choices: 18T, 36T, 54T. The 240 EXP, however, comes in with 36T (10° engagement) as a standard, with an eventual 54T option if you require it. According to DT, the 36-tooth option achieves a good balance between these three factors: points of engagement, weight, and reliability.

dt-swiss-ratchet-exp-vs-star-ratchet-bearing-stance.png

With the inner ratchet fixed and easily aligned with the outboard ratchet, the new system has faster full engagement (both ratchets are 100% engaged). The surface pressure is reduced so there will be less wear between parts. The hubs feel really solid under power because there are no pawls flexing as with a traditional design.

For the old 240, there are three ratchet choices: 18T, 36T, 54T. The 240 EXP, however, comes in with 36T (10° engagement) as a standard, with an eventual 54T option if you require it. According to DT, the 36-tooth option achieves a good balance between these three factors: points of engagement, weight, and reliability.

dt-swiss-ratchet-exp-vs-star-ratchet-bearing-stance.png

Pricing & Availability

DT Swiss offers the 240 EXP hubs for both mountain and road uses, supporting all major axle standards and brake interfaces. At our warehouses, we only keep the most popular axle sizes and spoke head type in stock (see the charts), but feel free to contact us or let us know in the checkout notes if you want a special order.

Please note that all EXP freehubs will work on all EXP hubs. For example, you can use a "mountain" XDR freehub on a "road" hub, so long as they are both EXP versions. Non-EXP and EXP freehubs and hub parts are not interchangeable.

We offer these hubs only as part of the LB wheelsets, not as a hubset separately.

Global Warehouse Stock List

DT 240 SP boost hubs for mountain bikes are available at our Global warehouse NOW! The road type will arrive by mid-June at the latest, but you can book a pair now. At our Global warehouse, the new 240s retail at $466 per set no matter what types you choose.

Type Axles Freehub Weight Holes
240 SP Road 100QR 130QR Shimano Road 11sp Shimano HG 290~299g 20/24
240 SP Road CL 12*100mm
12*142mm
Shimano Road 11sp Sram XDR, Shimano HG 295g~305g 24/24
240 SP MTB 6-Bolt 15*100mm
12*142mm
Shimano HG 11sp Sram XD 315g~326g 28/28
240 SP MTB CL 15*100mm
12*142mm
Shimano HG 11sp Sram XD 299g~310g 28/28
240 SP Boost 6-Bolt 15*110mm
12*148mm
Shimano HG 11sp Shimano MS 12sp Sram XD 325g~335g 28/28
240 SP Boost CL 15*110mm
12*148mm
Shimano HG 11sp Shimano MS 12sp Sram XD 309g~319g 28/28

North American Warehouse Stock List (ETA July)

The NA warehouse will inventory the below items. They also have access to transfer over hubs from the Global warehouse as needed. At our North American warehouse, the new 240s cost $506 a pair.

Type Axles Freehub Weight Holes
240 SP Road CL 12*100mm
12*142mm
Shimano Road Sram XDR, Shimano HG 295g~305g 24 front /24 or 28 rear
240 J-Bend Boost 6-Bolt 15*110mm
12*148mm
Shimano HG 11sp Shimano MS 12sp Sram XD 325g~335g 32/32

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COMMENTS

T

Tom 2020/06/30

Will 240 EXP hubs be available with CL brake compatibility from the North American warehouse this summer?


LightBicycle 2020/07/01

Hi Tom, We don't have the EXP hubs in the North America warehouse yet. But we already got the hubs in our Global warehouse. You can order the wheelset from Global. What configurations you have in mind? mountain bike or road disc? Thanks, Lightbicycle


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dave 2020/06/19

I have one of your wheel sets in 27.5", 100mm/142mm 32 hole DT Swiss 240s hubs. I want to convert this set to 'Boost'...or 110mm/148mm 32 hole DT Swiss 240 hubs. The spokes are J bend. Can you sell me a set of the new DT Swiss hubs for this conversion? The wheel set I bought from Light Bicycle appx 3 years ago. Thank you for your assistance! ddillon


LightBicycle 2020/06/19

Hi Dave, It is not okay to convert 100mm/142mm 32 hole DT Swiss 240s hubs to boost size. You will have to buy new hubs if you like boost size. Thanks, Lightbicycle


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