fit

This Guide shows you how to set up your TriRig Omni with the TriRig Alpha One or Alpha Xaerobars. This Guide can help you replicate your current bike position, or set up your bike based on numbers from a bike fitter. The Fit Chart below shows the actual X/Y coordinates of your arm pads measured from the bottom bracket. This coordinate is the most important number that bike fitters use to determine your position on a triathlon bike. Be aware that some fitters use a coordinate to the top/back of the pad, rather than the top/center. In that case, you can subtract 44mm from all of the reach numbers in the Fit Chart, which yields the back of pad number. The steps below provide an easy-to-follow system for making sure you have the perfect fit with your Omni.

Step 1: Determine your current fit numbers Show instructions »

Step 2: Review Frame Geometry

TriRig Omni Frame Geometry
  Small Medium Large
Frame Stack
(BB to Headset)
490mm 525mm 560mm
Frame Reach
(BB to Headset)
375mm 405mm 435mm
Front Center 560mm 600mm 640mm
Rear Center 400mm 400mm 400mm
Seat Angle 79° 79° 79°
Head Angle 72.5° 72.5° 72.5°
Fork Offset 48mm 48mm 48mm

Step 3: Select Size, then find your position on the chart Show instructions »

Frame Size:
Aerobars:

Alpha One

 







Pad Stack
(BB to Top of Pad)
 
175mm Monopost: 8,
40mm Stem Spacers
       
170mm Monopost: 7.5,
40mm Stem Spacers
       
165mm Monopost: 7,
40mm Stem Spacers
Monopost: 8,
30mm Stem Spacers
     
160mm Monopost: 6.5,
40mm Stem Spacers
Monopost: 7.5,
30mm Stem Spacers
     
155mm Monopost: 6,
40mm Stem Spacers
Monopost: 7,
30mm Stem Spacers
Monopost: 8,
20mm Stem Spacers
   
150mm Monopost: 5.5,
40mm Stem Spacers
Monopost: 6.5,
30mm Stem Spacers
Monopost: 7.5,
20mm Stem Spacers
   
145mm Monopost: 5,
40mm Stem Spacers
Monopost: 6,
30mm Stem Spacers
Monopost: 7,
20mm Stem Spacers
Monopost: 8,
10mm Stem Spacers
 
140mm Monopost: 4.5,
40mm Stem Spacers
Monopost: 5.5,
30mm Stem Spacers
Monopost: 6.5,
20mm Stem Spacers
Monopost: 7.5,
10mm Stem Spacers
 
135mm Monopost: 4,
40mm Stem Spacers
Monopost: 5,
30mm Stem Spacers
Monopost: 6,
20mm Stem Spacers
Monopost: 7,
10mm Stem Spacers
Monopost: 8,
No Stem Spacers
130mm Monopost: 3.5,
40mm Stem Spacers
Monopost: 4.5,
30mm Stem Spacers
Monopost: 5.5,
20mm Stem Spacers
Monopost: 6.5,
10mm Stem Spacers
Monopost: 7.5,
No Stem Spacers
125mm Monopost: 3,
40mm Stem Spacers
Monopost: 4,
30mm Stem Spacers
Monopost: 5,
20mm Stem Spacers
Monopost: 6,
10mm Stem Spacers
Monopost: 7,
No Stem Spacers
120mm Monopost: 2.5,
40mm Stem Spacers
Monopost: 3.5,
30mm Stem Spacers
Monopost: 4.5,
20mm Stem Spacers
Monopost: 5.5,
10mm Stem Spacers
Monopost: 6.5,
No Stem Spacers
115mm Monopost: 2,
40mm Stem Spacers
Monopost: 3,
30mm Stem Spacers
Monopost: 4,
20mm Stem Spacers
Monopost: 5,
10mm Stem Spacers
Monopost: 6,
No Stem Spacers
110mm Monopost: 1.5,
40mm Stem Spacers
Monopost: 2.5,
30mm Stem Spacers
Monopost: 3.5,
20mm Stem Spacers
Monopost: 4.5,
10mm Stem Spacers
Monopost: 5.5,
No Stem Spacers
105mm Monopost: 1,
40mm Stem Spacers
Monopost: 2,
30mm Stem Spacers
Monopost: 3,
20mm Stem Spacers
Monopost: 4,
10mm Stem Spacers
Monopost: 5,
No Stem Spacers
100mm Monopost: 0.5,
40mm Stem Spacers
Monopost: 1.5,
30mm Stem Spacers
Monopost: 2.5,
20mm Stem Spacers
Monopost: 3.5,
10mm Stem Spacers
Monopost: 4.5,
No Stem Spacers
95mm   Monopost: 1,
30mm Stem Spacers
Monopost: 2,
20mm Stem Spacers
Monopost: 3,
10mm Stem Spacers
Monopost: 4,
No Stem Spacers
90mm   Monopost: 0.5,
30mm Stem Spacers
Monopost: 1.5,
20mm Stem Spacers
Monopost: 2.5,
10mm Stem Spacers
Monopost: 3.5,
No Stem Spacers
85mm     Monopost: 1,
20mm Stem Spacers
Monopost: 2,
10mm Stem Spacers
Monopost: 3,
No Stem Spacers
80mm     Monopost: 0.5,
20mm Stem Spacers
Monopost: 1.5,
10mm Stem Spacers
Monopost: 2.5,
No Stem Spacers
75mm       Monopost: 1,
10mm Stem Spacers
Monopost: 2,
No Stem Spacers
70mm       Monopost: 0.5,
10mm Stem Spacers
Monopost: 1.5,
No Stem Spacers
65mm         Monopost: 1,
No Stem Spacers
60mm         Monopost: 0.5,
No Stem Spacers
  Pad Reach (BB to Pad Center)
Pads: +20mm » 108mm 111mm 114mm 117mm 120mm
Pads at Center » 88mm 91mm 94mm 97mm 100mm
Pads: -20mm » 68mm 71mm 74mm 77mm 80mm
  All reach numbers above are measured to the center of the pad. Some fit systems measure to the back of the pad instead. Our Ergo Cups are 115mm long, so subtract 60mm from the reach numbers above for back-of-pad fit numbers.

Our Ergo Cups are much longer than many other arm cups on the market. Therefore, if the reach numbers above do not match your desired fit perfectly, small differences (10-20mm) may be negligible.