Gruber Assist - the only way most of us can win
http://www.gruberassist.com/english/...t-description/
200 additional watts at the touch of a button.
seriously.
No modification of wheels required. Check out the video.
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"When you are chewing the bars at the business end of a 90 mile road race you really dont care what gear you have hanging from your bike so long as it works."
ΛΧΑ ΔΞ179 -
15% off your first Hammer Nutrition order!