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SKS Longboard - Fitting to a Specialized Tricross with Disc Brakes

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SKS Longboard - Fitting to a Specialized Tricross with Disc Brakes

Old 04-29-14, 06:47 PM
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SKS Longboard - Fitting to a Specialized Tricross with Disc Brakes


I recently got a new commuting bike since previously my only bike was a Trek with a partial carbon frame and raceblade fenders. It's nice having all the mounts I need, whereas my Trek did not.
I got some SKS Longboard P45's and fitted them. One of the things I didn't see addressed much after trying to search through others' experiences were the difference in mount locations on the front fork. Normally the mounts for fenders are down by the dropout, but on the Tricross with disc brakes they are halfway up the fork. Here are some pictures with notes:

Tools used:
- 8mm nut driver
- Adjustable plumber's pliers
- metric allen set
- Dremel with cutoff wheel to trim stays
- Bike maintenance stand

Here the instructions showed using a cross-top style screw, but I opted for one of the allens, and the size of the head tended to spread the bend open. I could see this being a future issue if the bend opens up enough to just slide off around the screw. To try to prevent this I used one of the washers (though not intended here), to sandwich the entire bend.

There were a few different ways to mount the rear fender to the chainstay area, and I again decided to do it a little differently than depicted in the instructions. The mount on this bike is threaded and not straight through, which I did not like the way it sat when threading the fender directly into it like the directions showed. Instead, I used both mounting plates for this. The curved plate that hugs the chainstay bridge in the picture goes through the fender tightening it to the second straight plate in the back. The straight plate has several holes, one of which I used to then bolt it to the bridge. This seemed to sandwich the fender a little better making it sturdier using the plates rather than directly with the bolts.

The first roadblock I met when mounting the front fender was the diameter of the forks. Because the Tricross tires are wider, and the forks having a larger profile because of this, the through bolt to mount the fender plate was not long enough. I got a longer bolt at my local hardware specialty store (Tacoma Screw) for less than a dollar. If you have a Home Depot or Lowes by where you live, they are not likely to have one long enough because their allen head selection is small, and it's also metric.

The second hurdle to mounting the front fender on this style of bike, were the location of the mounts on the forks. Since they were halfway up, it required bending the stays, whereas the rear fender stays remained straight and only required trimming.

I tried to make the two stays as symmetrical as possible by first bending one of them, and then held the two side by side to bend the second based on the profile of the first. After lining up and trimming, I made the final fit by tweaking the bends here and there to get the fender centered over the tire as closely as possible.

This is the finished product.

Things I would have done differently if installed again:
I probably would have opted to use loctite on the stay bolts to prevent them from coming off while riding, but I did not have any on hand. SKS does sell replacement hardware, but that should be a last resort. I will likely just check for tightness before and after riding until I purchase some. The size of the M5 allen bolt to hold the front fender plate isn't wide enough to comfortably hold the plate without one side of it sinking into the slider hole. I don't know if the washers provided were suppose to be used here or not (the instructions didn't show using them here, and I only had enough for the rear mounts), so I used whatever I had on hand. Looking back, I should have purchased a couple of washers with the replacement allen head bolt to specifically fit that size. What I did use wasn't the right size, but it did help it fit better.

Hope this helps anyone with a similar setup in their purchase choice and installation.
Attached Images
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rear_mount.jpg (80.8 KB, 112 views)
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chainstay_mount.jpg (86.6 KB, 100 views)
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top_fork_mount_front.jpg (78.2 KB, 97 views)
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front_symmetry.jpg (78.5 KB, 92 views)
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side_full.jpg (100.3 KB, 160 views)
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front_bends.jpg (83.9 KB, 122 views)
openaff is offline  
Old 04-30-14, 08:38 AM
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Bikes: 80's Treks, cargo bike, Lugged LeMond, Eddy Merckx 7-11, Ciocc resto-mod, All City MM disc, and some more

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Looks good. Nice job!
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Old 10-05-14, 07:24 PM
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Thanks for these instructions.I just followed them to add the same fenders to my Tricross
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Old 10-30-14, 12:59 AM
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Thanks very much for the details on your modifications. I wasn't expecting to find anyone who had the same combo of tricross bike and fenders. But what a pleasant surprise to see your post as well as the pictures. Mine isn't coming out quite as pretty. But I'll take effective over symmetrical. I've cursed the SKS Germans many times for what should have been a much more quicker and cleaner installation process. And what rotten instructions they provide. SKS needs to spend some time at Ikea. I'm finding the lower bolt holes on the rear of the frame - where I'm trying to secure the rear stays -- seems smaller than any of the other standard bolt holes in other parts of the bike, like for the water bottle holder and upper rack mounts. And the SKS bolts are just a bit too wide. Wondering if you were able to fit any of the SKS bolts into those holes to secure the stay or if you had to buy a separate set. Either way, I appreciate the detail you provided.
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Old 10-30-14, 01:32 AM
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Disregard the last part of my note above. I was able to get the SKS bolts to work after all. Thanks again for blazing the trail with your detailed instructions.
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