Salsa Rack-Lock Seatpost Collar


A seatpost collar with two threaded eyelets for attaching a rear bike rack. For bikes with no rack-mount eyelets at the top of the rear triangle. Available for 30mm, 32mm, 35mm and 35.4mm seat tubes (This is not the seatpost diameter).


This seatpost collar by Salsa comes with two threaded eyelets for attaching a rear bike rack.  It includes a pivoting stainless steel threaded insert to reduce fatiguing of the pinch bolt.

This is a great solution for mounting when your bike frame has no rack-mount eyelets at the top section of the rear triangle. It works by replacing your existing seatpost collar.

Available for 30mm, 32mm, 35mm and 35.4mm seat tubes.

**When picking the correct size you will want to measure the outside diameter of your seat tube, not the seat post. To clarify, the seat tube is the tube on your bike frame that the seat post (the part with the saddle attached) slides into.

For a rack mounting solution that mounts to the seat post rather than replacing your seat collar, checkout the Salsa Post-Lock Rack Mount.


  • H x W x D: 6cm x 3cm x 2cm / 2.5″ x 1.6″ x 0.7″
  • Weight: 51g / 1.80oz


    Salsa Cycles warrants this new Salsa product against defects in materials and workmanship for five (5) years from the original date of retail purchase by the consumer. This limited warranty is expressly limited to the repair or replacement of the original product, at the option of Salsa Cycles, and is the sole remedy of the warranty. This limited warranty applies only to the original purchaser of the Salsa product and is not transferable. In no event shall Salsa Cycles be liable for any loss, inconvenience or damage, whether direct, incidental or consequential or otherwise resulting from breach of any express or implied warranty or condition, of merchantability, fitness for a particular purpose, or otherwise with respect to this product except as set forth herein.

This warranty does not cover the following:

    • Damage due to improper assembly or follow-up maintenance or lack of skill, competence or experience of the end user
    • Products that have been modified, neglected, used in competition or for commercial purposes, misused or abused, involved in accidents or anything other than normal use
    • Damage or deterioration to the surface finish, aesthetics or appearance of the product
    • Normal wear and tear
    • Labor required to remove and/or refit and re-adjust the product within the bicycle assembly

This warranty gives the consumer specific legal rights, and those rights and other rights may vary from state to state.

Customer Reviews
5.0 Based on 19 Reviews
5 ★
4 ★
3 ★
2 ★
1 ★
Customer Photos
Write a Review

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
Gardner G.

Solid product.

Works great! No complaints.

Daniel B.

Add flexibility!

It’s a seat post collar, but more than that. Opens rack options for bikes that don’t have them! Clean simple design.

Andrew S.

The right piece for the job

Helpful description I got what I needed to help get a rear rack on a surly steamroller. Came fast in the mail.

Jose A.
United States United States

Like a kid in a candy store

Awesome shop with everything you could imagine related to bikepacking. Friendly & knowledgeable staff. A must bike shop to visit if your are in Tucson, Arizona. Salsa Rack-Lock Seatpost Collar Review
Mark O.

Small part, big upgrade

Works great. Just what I needed to add a rack to my wife's salsa rangefinder. Now she can carry gear for trips, and more importantly, our granddaughter's bike seat.