Best Spark Plug Wires according to Red

[tsbt]

Mystic Red raves about Magnecor wires :2thumbup:

Their catalog for my 92 K100RS4V points me to:
1995-1989 K series (except K1200), 4 cyl. 16 valve engines 40210 47210 45210 (these three numbers represent 8mm, 7mm, 8.5mm (K85)


Does anyone know which of these three sizes I need?

[frankenduck]

Any of those would work.  The first two digits indicate the diameter. (and color)

40=8mm(blue)
45=8.5mm(red)
47=7mm(black)

Best price I've found is at Alamo Motorsports.  Not listed on the site but if you call cust. service with a part # they will get them for you.

[tsbt]

Any of those would work.  The first two digits indicate the diameter. (and color)

40=8mm(blue)
45=8.5mm(red)
47=7mm(black)

Best price I've found is at Alamo Motorsports.  Not listed on the site but if you call cust. service with a part # they will get them for you.

Thanks Doctor D, I'm on it!

[NCJ]

Any advantage to be gained by using the larger diameter wires other than a fuzz less resistance? I'm getting ready to go through my K75 and plug wires are one of the items in consideration.

[mystic red]

9. Do I need an 8.5mm or a 10mm size wire if my original wires are just 7mm (or smaller) ?

If you don't intend to upgrade your vehicle's original ignition with a high-output ignition, you may not need larger size wires. Magnecor KV85 and R-100 Race Wires have been designed primarily for race engines that will be run with high-output ignition systems, and contain high-capacity 2.5mm conductors that require extra insulation when used with extreme-output ignition systems. Magnecor Race Wires will also be exposed to heat an unmodified production vehicle will never experience. However, the major advantage Magnecor Race Wires have over conventional 5mm, 7mm and 8mm wires is that neither the high-capacity conductor nor the insulating jacket will wear out during the life of the engine.

[WayneDW]

Any advantage to be gained by using the larger diameter wires other than a fuzz less resistance? I'm getting ready to go through my K75 and plug wires are one of the items in consideration.

Welcome Jay.  You have the same motorcycle as me!  How long have you had it?

[NCJ]

Any advantage to be gained by using the larger diameter wires other than a fuzz less resistance? I'm getting ready to go through my K75 and plug wires are one of the items in consideration.

Welcome Jay.  You have the same motorcycle as me!  How long have you had it?

Since the summer of '97, so 15+ years; only a tad longer than it's taken to reply to your post..... :dunno2: :yes

[frankenduck]

I run the 8mm ones in my K75 - mostly because I wanted the blue color.

[mystic red]

Red is always faster.

[Dragwn]

Stumbling through the upgrades, if anyone is looking for these, found the 8mm sets on fleabay http://www.ebay.com/itm/Magnecor-40209-8mm-Electrosports-80-Ignition-Cable-fit-BMW-K-Series-83-95-/131184332810?pt=Motors_Car_Truck_Parts_Accessories&hash=item1e8b32100a&vxp=mtr

$62.40 + $9.99 shipping