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.
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.
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.
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.
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.
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.
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.
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.
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.
240 EXP Hub Sound (36T)
SHARE NOW:
COMMENTS
P
Pat 2020/12/01
LightBicycle 2020/12/01
REPLY
Please leave your name here.
E-mail is required for further contact.
Please enter a message.
T
Tom 2020/06/30
LightBicycle 2020/07/01
REPLY
Please leave your name here.
E-mail is required for further contact.
Please enter a message.
D
dave 2020/06/19
LightBicycle 2020/06/19
REPLY
Please leave your name here.
E-mail is required for further contact.
Please enter a message.
Get in touch
Feel free to leave a comment if you have any questions or suggestions on our products or other issues.
Please leave your name here.
E-mail is required for further contact.
Please enter a message.
We use cookies for a better experience. Learn more.
Your Cookie Preferences
We use cookies to improve your experience on this website. You may choose which types of cookies to allow and change your preferences at any time. Disabling cookies may impact your experience on this website. You can learn more by viewing our Cookie Policy.
-
Cookies required to enable basic website functionality.
-
Cookies used to understand how the website is being used.
-
Cookies that are used to enhance the functionality of the website.
-
Cookies used to deliver advertising that is more relevant to your interests.
Aceept All Cookies
Save Preferences
Reject All Cookies
Save Preferences
Reject All Cookies
Accept All Cookies