I'm not sure where the expression GP comes from either, but I believe you will find that the 25mm Ohlins are their FKC range, which for our older 41mm forks are the FKC101 and for the later 49mm forks are FKC102. Neither of these are adjustable, although I understand that Howard sets them up to his own special recipe. In the case of your upgrade, going to the expense of 49mm forks, it would be a shame IMHO to not also use the fully adjustable/tunable 30mm cartridges.

 

Hey G Brown,

From my conversation with Howard the other day, he has two different versions of Ohlins cartridges. There's the FKC 101(25mm) and FKC102(30mm). And these are not adjustable. And these perform very well.

But he also explained, he has a 25mm and a 30 mm "road and track" upline version of the Ohlins cartridge. And these are fully adjustable. I saw online that "Road and Track" is terminology that Ohlins uses . He made it very clear that their valving is far superior to the regular Harley FKC cartridges.

I suspect he has modified the Ohlins "Road and Track" cartridges that go in high performance front ends, to work with our Harleys. But I am just guessing here.

Maybe, the term "GP" refers to the fact that this is a modified version of the cartridge used in GP race bikes. ???

Again, I really don't know.

 

"GP" is for GP Suspensions ... http://www.gpsuspension.com/ ... (the reference is for ones purchased / (modified?) through Howie)

Here's an Install Thread on a 2014 49mm Street Glide New Suspension Time

.

 

That's interesting stuff. Howard builds Ohlins shocks and cartridges to his own 'recipes' as I call them and has been doing so since before Ohlins discovered the Harley market. Prior to that he built Penske shocks for us, based on racing car shocks. He also started work on a 49mm fork set-up before Harley introduced theirs a few years ago, using the R&T 30mm cartridges, also can supply upside-down forks. He's a versatile chap! Checking the Ohlins website it seems they make 22mm, 25mm and 30mm cartridges.

 

I love my bike. But this mid life crises, motorcycle- make over, is getting very expensive

 

Hey Multihdr,

Thanks for the explanation and the link. That answered all my questions.

Now my only concern will be how to adjust them without modifying the nacelle. I know I can cut and plug it. But I really do not want to do that.

Looks like I will have to remove the nacelle for a day of adjusting and then put it back on.

 

The good news is the experience just keeps getting better! The not so good news is it doesn't get any cheaper.....

 

How isn't that the truth, my 25K Street Glide rode like a log wagon.. Is there not shame Harley Davidson?