Topeak QuickClick Saddle Rail Mount

2024-05-20 update: see improved model here

Relatively permanent mount on the rear saddle rails for Topeak QuickClick compatible saddle bags.

I made two versions: one flat (original design), & one round so you can slide the whole mount along the rails to find the ideal position.

I also uploaded the bare Base.sldprt in case anyone wants to customize the 2-bolt plate extrusion.

How I Designed This

Critical dimensions:

• Width of big end of the slot: 3.32 mm
• Width of small end of the slot: 1.78 mm
• Slot depth: 2.90 mm

Scaled these by 115%.

Counterbored holes for the M5 bolts, only half the original depth of 4 mm, since thickness is critical here, to prevent the pieces from breaking under the compression by the bolts. Used only to help locate the bolts really, but it also lets standard 1/4" 5 mm hex bits reach it without hitting the rail body first.

I decided not to add the locating stub on the original part (almost impossible to see in the image below - it's between the two bolts), since the idea is that you print a bunch of these & leave them on your bike(s). So you can suffer the slightly-more-cumbersome one-time installation. This saves you from printing more supports.

I am aware there are at least 2 variants of the mount out there - the flat styled one shown immediately below, & the round styled one in the Compatibility section. I only own the flat styled one, so that's the one I used to model the part in SW. I think they are both called QuickClick. I believe I may have the older version, & that they've been replaced by the round style (see further down).

I can't seem to find the flat style on the Topeak website (21 Feb 17) at all.

Source style.

Assembly & Instructions

The original hardware included:

• x2 M5 x 16 mm bolts

You should add:

• x2 M5 locknuts (7.92 mm defining inscribed circle)

You may need longer bolts depending on your saddle rail diameter. I would go longer regardless.

Print either the FLAT pieces or the ROUND pieces. You'll need the base & the plate. The locknuts set inside the plate. Wide wing tips go up.

Compatibility

Your clip (on the bag) should look like this.

I am not positive, but I think bags with this style of mount will also work.

Future

• angled variations; I've had problems especially with my saddles too far forward such that the bags need to make a large bend to fit the angle between the rails & the seatpost

Updates

24 Feb 17: Just mounted one. Almost everything was perfect the first time. The slot was perfect, but the wall thickness where the clip actually snaps in place was a little too thick. I used a knife to thin it down a little bit. I would also recommend manually pushing the snapping bit (on the bag) up to further secure it even if you hear the click. I printed both pieces so they didn't need any supports. I needed longer-than-16 mm bolts. Exacerbated by the orientation, there was enough warping that one of the hex insets was too big. I wrapped the locknut in electrical tape & wound the bolt through until it was set in the plate. Tightened fairly tight, with no issue.

Category: Replacement Parts