Transfer SL Factory Dropper Seat Post
Transfer SL Factory Dropper Seat Post
Transfer SL Factory Dropper Seat Post
Transfer SL Factory Dropper Seat Post
Transfer SL Factory Dropper Seat Post
Transfer SL Factory Dropper Seat Post

Transfer SL Factory Dropper Seat Post

SKU: 925-01-201

Regular price$399.00
Travel (mm)
  • In stock, ready to ship
  • Inventory on the way
  • Free shipping on all orders $49+

Introducing the Transfer Factory SL dropper post from Fox. Weighing up to 167 grams lighter than its predecessor, it claims the title of the lightest mainstream dropper post available. With its Factory Series designation, it incorporates Fox's top-tier technology, including the renowned Kashima Coat, and proven performance in World Cup competitions.

Compatible with two lever options for flat bars, drop bars, and 1x and 2x drivetrains, it injects the spirit of "shred" into Trail, XC, and Gravel riding scenes. Its two-position design allows for full extension or retraction, with size and travel options ranging from 27.2mm x 50mm to 31.6mm x 150mm.

Transfer SL Factory Details:

  • Up to 167g lighter than Transfer
  • Lightweight under-bar 1x lever, classic 2x lever, or drop bar lever compatible
  • Titanium hardware on Factory level posts for 10g weight savings

Tech Specs:

Diameter Sizes: 27.2 / 30.9 / 31.6
Metric Sizes: 50mm / 70mm / 75mm / 100mm / 125mm / 150mm
Routing: Internal Only
Actuation: Cable Remote
Adjustment: Indexed
Clamp Style: Standard Rails
Offset: 0mm
Lower Coating: Anodized Black
Upper Coating: Kashima Coat
Overall length and insertion depth:
  • 27.2 x 50mm, 80mm min insertion, 248mm max insertion, 350mm extended length, Starting Weight: 327g
  • 27.2 x 70mm, 80mm min insertion, 248mm max insertion, 370mm extended length, Starting Weight: 338g
  • 30.9/31.6 x 75mm, 80mm min insertion, 225mm max insertion, 355mm extended length, Starting Weight: 353/363g
  • 30.9/31.6 x 100mm, 80mm min insertion, 225mm max insertion, 380mm extended length, Starting Weight: 360/371g
  • XL 31.6 x 100mm, 80mm min insertion, 275mm max insertion, 430mm extended length, Starting Weight: 396g
  • 31.6 x 125mm, 80mm min insertion, 275mm max insertion, 455mm extended length, Starting weight: 432g
  • 31.6 x 150mm, 80mm min insertion, 275mm max insertion, 480mm extended length, Starting weight: 437g

Please reach out to us with any questions you may have on anything we sell. We want to make sure you get the right part the first time. Our lifelong riders at Thunder Mountain Bikes are knowledgeable and would love to talk to you!


We currently offer both economy and expedited shipping options though FedEX and USPS. 

Orders totaling over $49 are eligible to ship for free via an economy ground option of our choice. 

If you're in need of something super-quick, please contact us directly. We may be able to overnight your order with an additional fee and depending on your location. 


Should there be an issue with the item you bought, or you no longer need your purchase, we will be happy to set up a return.

Returns or exchange requests for New or Used Bikes must be requested by emailing us at within fifteen (15) days from the date of delivery. Bikes must be in un-ridden condition. Custom-built bikes may not be returned. Returned bikes have a $200 restocking fee and the customer pays for return shipping.

Returns for most other items may be requested within sixty (60) days of the delivery date. All returned items must be received in new, unused, and uninstalled condition, with the original tags and labels attached and in the original packaging. We cannot accept returns on any items installed or show wear of any kind. 

Clearance and open-box items may not be returned. 


To request a return, please log in to your customer account by clicking the  customer account icon  Profile icon in the top right of any page or visit

1. In the Email field, enter your email address and click Continue.

2. In your email account, open the email sent from our store and copy the six-digit verification code included in the email.

3. Go back to the online store and enter a six-digit verification code to log in.

4. Find and click on the order that you want to submit a return for.

5. If your order has more than one item, select only the items you want to return.

6. Select a return reason and add a note for the store if needed.

7. Click Request Return.

Once your return request is approved, you will receive an email with shipping instructions and a return shipping label. 


We will process your return after we receive your returned item(s) and inspect the condition. Please allow at least seven (7) days from the receipt of your item to process your refund. We will notify you by email when your return has been processed.


If you receive defective or damaged products or if we sent you the wrong products, please contact us using the phone number or email below.


If you have any questions concerning our return policy, please contact us at:

(928) 282-1106   |

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Customer Reviews

Be the first to write a review