Alpha Spare Parts




  • Ergo Cups


  • Ergo Cups


  • Ergo Cups


  • Ergo Cups


  • Ergo Cups


  • Ergo Cups


  • Ergo Cups Measurements


  • Ergo cups (bottom) vs.
    Ultralight Cups (top)


  • Ergo cups (left) vs.
    Ultralight Cups (right)


  • Ergo cups (left) vs.
    Ultralight Cups (right)


  • Ultralight Cups


  • Ultralight Cups


  • Ultralight Pads + velcro sheets


  • Ultralight Cups Measurements


  • Alpha Classic Hardware Kit
  • Alpha Spare Parts
    In Stock



No returns on Alpha Spare Parts.

TriRig is proud to make Alpha's spare parts available for separate purchase. If you need replacements, here they are. You can now buy the following:

  • Ergo Cups: our new Ergo Cups are the ultimate in comfort. They work with all versions of our aerobars, and now come standard on Alpha X and Alpha One. They may work with other bars, the hole spacing is published in the images above, so you can compare to your own setup. The Ergo Cups trade a little weight (compared to our Ultralight Cups) in exchange for much more surface area, more arm wrap, a super grippy textured neoprene pad, and ultimately a more comfortable and stable ride. They feature the same adjustment range as the Ultralight Cups. However, due to their shape, they may interfere with a BTA bottle when used in certain narrower positions. You can get around this by using some ordinary standoffs/spacers from your local hardware store to lift the BTA bottle upward and clear of the cup itself.
  • Ultralight Cups: these are our legacy cups that used to come standard with our bars, but have now been replaced by the Ergo Cups. Weighing in at just 115g per pair, complete with velcro and pads, these are as light as they come. They trade the greater arm wrap and grippy pads of the Ergo Cups, in exchange for losing weight. If weight is critical, these are the cups for you. In general, we recommend our Ergo Cups for most applications.
  • Replacement Pads: standard replacements for the pads that come on our cups, same as what originally came with them. Available for Ergo Cups (textured neoprene pads) or the Ultralight Cups (fabric over foam gel)
  • Alpha Classic Hardware Kit: Includes a complete replacement set of all original hardware shown above, for the Alpha Classic. Does not include arm cups, arm pads, velcro, or Gamma extensions.



Alpha Classic BTA Mount




  • The Alpha BTA Mount
    Simple, elegant, aero


  • Exceptionally light weight
    Just 20 grams


  • Skeletal structure preserves
    access to bolts


  • No bolt occlusion, even with
    bottle cage installed


  • Front-on view of the BTA kit
    Extra-short bolts stay hidden


  • The Spacer Kit
    Optional added stack
    (for BTA users only)
  • Alpha Classic BTA Mount
    In Stock



BTA Mount

The world's best aerobar deserves the world's best BTA mount. The Alpha Classic BTA mount is, much like the Alpha itself, both a highly complex design but also very simple in its implementation. Read all about the design process here. The mount is made of solid, unidirectional carbon fiber. Its skeleton-like structure keeps the weight down to an amazingly-low 20g, and it requires NO mounting hardware at all. Why is that? Because it acts like a standard Alpha spacer. You just line it up in your spacer stack tower, and the Alpha's standard thru-bolts keep it in place. It has two positions for bottle placement, and can be flipped forwards or backwards, essentially giving you four different mounting options for your bottle.

The kit includes everything you need: the carbon fiber BTA mount itself, as well as two M5 screws and washers for bottles. And unlike most mounts, these screws are special; we sourced extra-short M5 screws so that they don't protrude under the BTA mount. This thing is as sleek and aerodynamic as they come.

Keep in mind, this BTA mount is ONLY compatible with the TriRig Alpha Classic aerobar. It will not work on any other bar.

Spacer Kit

An additional benefit of the BTA mount is that it provides additional structural strength to the spacer stack of the bar. Those of you who max out the Alpha's spacer tower may notice it's not quite as stable with all 35mm of spacers as it is if you have no spacers at all. The BTA mount brings rock-solid stability back to the bar.

So, since the mount affords extra stability, we can offer additional spacers to those of you using the mount. As an optional extra with the BTA mount, you can order the extra Spacer Kit, which allows you to go up another 10mm or 20mm of stack height. The Spacer Kit includes two 10mm spacers, two 20m spacers, four 85mm thru-bolts, and four 95mm thru-bolts. This Spacer Kit can ONLY be purchased WITH the BTA Mount. It is not available separately, because as mentioned above, these extra spacers would result in an unstable tower. The extra stack height requires the BTA mount to lock the towers together and provide that stability.