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COILSPEC coils are engineered to be the best replacement available. We use high grade materials and a unique design to reduce energy loss (hysteresis) ensuring excellent engine response, performance and fuel efficiency.
Installation Note: Remove your original spark plug cap by twisting counter-clockwise, install on new coil by twisting clockwise.
OEM Reference: 21121-0027
Posted by Unknown on Oct 23rd 2018
I had a misfire and complete shut down of one piston when down shifting. Ran strong at high speed, and believed it to be the coil as we had already replaced the spark plug caps and wires, believing it was a bad resistor in the cap lead. Plus the injectors. So I bought the coils at a great price and got supper fast delivery. But in the end it was a bad spark plug which looked as good as the new plug we installed. The bike had 2,460 miles on it. I left the COIL SPEC coils on the bike, and running strong.
Posted by Parker on Jan 16th 2017
fast delivery item as described
Posted by Dan on Dec 21st 2016
Just like the photo
All prices are in USD.