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 original spark plug caps by twisting counter-clockwise, install on new coil by twisting clockwise.
Mounting holes: 90mm (3-1/2 inches) from center to center
Spark plug wires: 21" long with 11" protective sheath
Positive (yellow) and Negative (black) wires are 16" long with 4" protective sheath near the mounting hardware.
OEM Reference: 21121-1174 21121-1013 |
Posted by Shane Smith on Apr 8th 2017
I ride a 1977 kz1000 running a dyna ds2 ignition calling for 3 ohm in primary side of coil and these coils are up for the job and then some. They bolted right on in factory mounts and with a little bit of trimming of the length of wires and reuse old ngk boots she fired up and had more spunk than ever!!
Posted by Kevin on Nov 29th 2016
Fits like a glove
Posted by Unknown on Nov 16th 2016
I put this on a 1977 kawasaki z750 twin, the kawasaki dealer wants over $200 for a original one, screw that, this thing works awsome, nice bright spark.
Posted by DANIEL on Nov 15th 2016
PERFECT!
Posted by Hal on Nov 11th 2016
Very honest! Stands by product! Great to deal with!
Posted by Unknown on Nov 9th 2016
everything worked well
Posted by Jason on Nov 1st 2016
Great product
Posted by Bart on Oct 28th 2016
Brand new part and sparks like a champ now.
Posted by Ken R. on Oct 28th 2016
And fast shipping, happy customer.