hblake wrote:
Powertap has the C1 chain ring powermeter on sale for $349.00
https://www.powertap.com/...wertap-c1-chainrings
That is an incredible deal. I use a C1 chainring and Wahoo ELEMNT Bolt and it's a great, great combo.
If your 105 crank has a 5-bolt pattern like this one http://www.chainreactioncycles.com/...hainset/rp-prod50444 chances are the chainring is compatible. Newer Shimano cranks have a 4-bolt pattern.
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