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Discussion Starter #1 (Edited)
I ordered some Taylor made 8mm orange spark plug wires XG208 by Sumax from a well known online parts dealer. The long wire is only 16.5 inches long. My stock wire for the rear cylinder is 19 inches long. A tech at Sumax is telling me he had the stock rear cylinder wires pulled from both the street 500 and 750 at his local dealership and claims they measured 16.5 inches in length. The same as the product. I have a pic that shows differently in comparison.

The parts dealer will take back the orange wire returned via UPS with return sticker provided in my order. But before I do that I just want to make sure there isn't a discrepancy in wire length of of stock set vs after market set.

I decided to order another rear spark plug wire from my dealership just in case I might have inadvertently damaged the stock one I have during removals.

Has anyone else measured their spark plug wires be it 500 or 750? If so any input would be appreciated.

Mark
 

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I ordered some Taylor made 8mm orange spark plug wires XG208 by Sumax from a well known online parts dealer. The long wire is only 16.5 inches long. My stock wire for the rear cylinder is 19 inches long. A tech at Sumax is telling me he had the stock rear cylinder wires pulled from both the street 500 and 750 at his local dealership and claims they measured 16.5 inches in length. The same as the product. I have a pic that shows differently in comparison.

The parts dealer will take back the orange wire returned via UPS with return sticker provided in my order. But before I do that I just want to make sure there isn't a discrepancy in wire length of of stock set vs after market set.

I decided to order another rear spark plug wire from my dealership just in case I might have inadvertently damaged the stock one I have during removals.

Has anyone else measured their spark plug wires be it 500 or 750? If so any input would be appreciated.

Mark
Can we assume that the 16.5 inches long wire is too short and won't work? I haven't measured the wires on mine so I really don't know.
 

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Discussion Starter #4
I have an update about the Orange Spark Plug wires. I have been working with an individual name Kirk at Sumax by taking pics of my
bike with the Orange plug wires. He agrees with my assessment and will be changing the length of the rear spark plug wire (16 1/2 inches) (Front cylinder wire is ok) to match the length of the stock wire (20 inches long) and I will be getting a free set or wires for my troubles. This means he will be repackaging the wires so no one else will have deal with this issue concerning Taylor Made wires from Sumax. :)
 

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Discussion Starter #5
Great News Here!

Yesterday I received the longer version of the Orange spark plug wire. In addition to receiving the longer wire, a pack of Orange ThunderVolt 50's (correct length) and a set of 4 gauge battery cables. The Customer Service I received was well beyond what I had expected from
Sumax. Sumax was very appreciative of me letting them know that their spark plug wire product needed updating. Will post pics in
my next post....Off to work I go.
 

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Discussion Starter #9
Ok, I have both 8mm Orange Taylor wires installed on the bike. I routed the wire for the back cylinder in the same clips the stock spark plug wire was routed through. The easy part was applying di-electric grease to the metal connectors. I can tell you that getting the wire on the clip under the tank on the coil side of the bike was difficult but I managed. As for the performance of the wire, After riding to a couple of Harley Dealerships today, the engine ran better in a higher gear at low speeds..for ex., 5th gear at 35 mph with no stuttering. Further research is needed to be sure of the performance of the new wires.
 

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update please?

Ok, I have both 8mm Orange Taylor wires installed on the bike. I routed the wire for the back cylinder in the same clips the stock spark plug wire was routed through. The easy part was applying di-electric grease to the metal connectors. I can tell you that getting the wire on the clip under the tank on the coil side of the bike was difficult but I managed. As for the performance of the wire, After riding to a couple of Harley Dealerships today, the engine ran better in a higher gear at low speeds..for ex., 5th gear at 35 mph with no stuttering. Further research is needed to be sure of the performance of the new wires.
how are the spark plug wires doing on your bike?

i'm thinking about ordering me a set from the same place you mentioned, just wanted to check with ya to see if all is well with these before I ordered mine.
 

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does anyone know if the HD SE phat orange plug wires part# 31946-99B fit our street 750?

I searched for surmax and didn't see a website, is this a brand name of certain parts or an after market parts website company?

I seen where j&p cycles has orange plugs wires they claim fits the street 750 part# 178-959 thundervolt 8.2 mm wires for $28 plus $7 shipping but it takes 3 weeks to get them.

are these the same as the original poster of this thread bought?
 

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does anyone know if the HD SE phat orange plug wires part# 31946-99B fit our street 750?

I searched for surmax and didn't see a website, is this a brand name of certain parts or an after market parts website company?

I seen where j&p cycles has orange plugs wires they claim fits the street 750 part# 178-959 thundervolt 8.2 mm wires for $28 plus $7 shipping but it takes 3 weeks to get them.

are these the same as the original poster of this thread bought?
Yes, sumax is the company and thundervolt is their series. They have two different series which go with street 750. And, you can also find it on revzilla.!?
 

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Discussion Starter #14
how are the spark plug wires doing on your bike?

i'm thinking about ordering me a set from the same place you mentioned, just wanted to check with ya to see if all is well with these before I ordered mine.
The wires are holding up very well with no issues. If you do decide to order a set, be sure to check the lengths on both new wires just to be sure. :)
 

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Discussion Starter #15
does anyone know if the HD SE phat orange plug wires part# 31946-99B fit our street 750?

I searched for surmax and didn't see a website, is this a brand name of certain parts or an after market parts website company?

I seen where j&p cycles has orange plugs wires they claim fits the street 750 part# 178-959 thundervolt 8.2 mm wires for $28 plus $7 shipping but it takes 3 weeks to get them.

are these the same as the original poster of this thread bought?
Ouch! I using the 8 mm. I have a set of the 8.2mm but not sure if the stock wire clips under the gas tank will hold the thickness of the 8.2mm wire.
 

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Ouch! I using the 8 mm. I have a set of the 8.2mm but not sure if the stock wire clips under the gas tank will hold the thickness of the 8.2mm wire.
do you think it would be possible to bend out the clip a little ?
or maybe use a black wire tie in that area?

I can raise the tank if need be.
 

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The wires are holding up very well with no issues. If you do decide to order a set, be sure to check the lengths on both new wires just to be sure. :)
the specs on j&p cycles website selling these wires say they are an exact fit for the street 750, and it shows the length.

I just don't like the 3 week wait to be shipped.
....most likely coming from china !

i'd much rather buy some made in the U.S. personally, even though those may be made in china also.....lol

maybe at the end of August when the new parts and accessories from Harley is available they will have orange plug wires for the street models like they do for other models. those sell for $24 and free shipping to the dealer.

that is what i'd rather do.
 
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