Found: Alden Tri-TT Designs Carbon Aero Covers for Chainrings, Trek Speed Concept & more!

Alden Tri-TT Designs carbon fiber aero covers for chainrings cycling computers and Trek Speed Concept triathlon bike cables

Built for his own Trek Speed Concept triathlon bike, Glen Alden’s carbon fiber aerodynamic chainring and cable covers caught enough attention at events and online that he’s now making them for sale.

In most cases, the parts will require a bit of do-it-yourself installation (Triathletes, look away now), but the result are some very smooth sections that will set your bike apart. He’s also made his own aero computer mount between the aero bar extensions. Slip past the break for closeups, pricing and details…

Alden Tri-TT Designs carbon fiber aero covers for chainrings cycling computers and Trek Speed Concept triathlon bike cables

The chainring cover is sized for 52-56T outer rings and shaped to fit any of SRAM’s road cranksets and Shimano 105. They’re available in various states of readiness, so depending on your comfort level and skill with a drill and Dremel tool, you can save a bit of coin if you’re willing to tap, poke and cut on your own.

The cover is held in place with nine stainless steel M3 button head cap screws and comes as a solid disc for $50. Get it with the crankarm hole precut and it’s $75, or ship him your crankset and he’ll install it all for $110. In all cases, they come with the screws. If you need the tools to tap and drill your chainring, he’ll send those for another $20.

Alden Tri-TT Designs carbon fiber aero covers for chainrings cycling computers and Trek Speed Concept triathlon bike cables

With screws, the whole thing only adds about 45g. The disc itself is only 32g.

Alden Tri-TT Designs carbon fiber aero covers for chainrings cycling computers and Trek Speed Concept triathlon bike cables

The Trek Speed Concept (and other bikes) funnel the shift and brake cables/wires into the frame directly behind the stem. Sure, they’re sort of tucked out of the wind there, but Alden’s cover smooths things over in a much more aesthetically pleasing manner.

Alden Tri-TT Designs carbon fiber aero covers for chainrings cycling computers and Trek Speed Concept triathlon bike cables

The piece is curved to allow proper steering clearance and mounts to the top tube with double stick tape and the existing top tube mounts for Bontrager’s “nutrition storage box”, so no drilling or alterations of the frame are required.

Alden Tri-TT Designs carbon fiber aero covers for chainrings cycling computers and Trek Speed Concept triathlon bike cables

It’s available with or without the slot for a Di2 controller box. It replaces the stock rubber cover on any 9.X series Speed Concept frame and will fit a wide range of their integrated stem sizes. Choose between gloss or matte carbon finish, weights are just 22g to 28g. Price is $60.

Alden Tri-TT Designs carbon fiber aero covers for chainrings cycling computers and Trek Speed Concept triathlon bike cables

This carbon computer mount/cover is a work in progress. This one’s for his own bike, but if you’re interested let him know…he’s considering putting it into production, too.

All items are made by Glen in small batches in Indiana. Check out his website at www.alden-designs.com.

Comments

Rob - 10/06/12 - 3:01pm

Loving the cable cover and computer mounts, really nicely put together and finished off.

rpdupre - 10/06/12 - 3:30pm

While I don’t have a Speed Concept or the need to purchase any of this stuff, I commend his effort and reasonability in pricing. I think we can all agree that if this was coming from a large company, you could expect to pay easily $120+ for each piece. Practical products that can really make a difference, handmade (with passion and in his own spare time, in the USA), for relatively reasonable prices… That’s what it’s about!

Aaron - 10/06/12 - 5:03pm

UCI Legality be damned!

luddite cyclist - 10/06/12 - 6:34pm

apperently our indiana refs are doing a lax job. little races? whatever. but the state championships???? none of these products are structural and therefore not legal for usa cycling events. sorry the crank cover looks nice and way cheaper than a $1500 zipp crank.

Spencer - 10/06/12 - 9:03pm

Indiana state championships: little race. Ride your bike and shut up.

luddite cyclist - 10/07/12 - 9:51am

funny. but where do you draw the line on how many uci rules we ignore? the computer mount breaks the 3:1 dimension rule. it is also an add on fairing. pretty soon we have recumbents at state championship events.

Topmounter - 10/07/12 - 5:44pm

Yep, a little is good, more is better. Full-fairing, coming soon.

Jordan - 10/07/12 - 7:04pm

He’s primarily a triathlete. And these devices all work perfectly fine for those. And you can’t deny the crankset looks awesome.

Mitch - 10/07/12 - 11:32pm

Who is making that rear wheel? Which has a power tap inside? Its definately not Easton…

Glen - 10/08/12 - 4:00pm

Mitch, The rear disc is an old Zipp 950 that I picked up used and it needed a little TLC. Being that I already had the Easton front and the 90mm Easton TT wheel, I just decided to paint the wheel black and put Easton decals on to match, it worked out pretty well. I train with a normal rear Powertap wheel with a disc. cover, and just use the Powertap head for MPH and cadence with this disc. I hope this helps.

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