This Guide shows you how to set up your TriRig Omni with the TriRig Alpha One or Alpha X aerobars. 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
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 »
Pad Stack (BB to Top of Pad) |
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175mm | Monopost: 8, 40mm Stem Spacers |
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170mm | Monopost: 7.5, 40mm Stem Spacers |
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165mm | Monopost: 7, 40mm Stem Spacers |
Monopost: 8, 30mm Stem Spacers |
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160mm | Monopost: 6.5, 40mm Stem Spacers |
Monopost: 7.5, 30mm Stem Spacers |
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155mm | Monopost: 6, 40mm Stem Spacers |
Monopost: 7, 30mm Stem Spacers |
Monopost: 8, 20mm Stem Spacers |
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150mm | Monopost: 5.5, 40mm Stem Spacers |
Monopost: 6.5, 30mm Stem Spacers |
Monopost: 7.5, 20mm Stem Spacers |
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145mm | Monopost: 5, 40mm Stem Spacers |
Monopost: 6, 30mm Stem Spacers |
Monopost: 7, 20mm Stem Spacers |
Monopost: 8, 10mm Stem Spacers |
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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 |
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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 |
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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 |
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85mm | Monopost: 1, 20mm Stem Spacers |
Monopost: 2, 10mm Stem Spacers |
Monopost: 3, No Stem Spacers |
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80mm | Monopost: 0.5, 20mm Stem Spacers |
Monopost: 1.5, 10mm Stem Spacers |
Monopost: 2.5, No Stem Spacers |
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75mm | Monopost: 1, 10mm Stem Spacers |
Monopost: 2, No Stem Spacers |
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70mm | Monopost: 0.5, 10mm Stem Spacers |
Monopost: 1.5, No Stem Spacers |
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65mm | Monopost: 1, No Stem Spacers |
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60mm | Monopost: 0.5, No Stem Spacers |
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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. |
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