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Rekluse Core EXP vs EXP

Any thoughts on using an EXP instead of a Core EXP? Rekluse recommends you use the Core EXP on a snow bike because of the extra load. Does a MH kit really add that much extra load?
 
I highly recommend using the Z-start Pro . Been running for 2 years on my WR450 snowbike with no issues. Tore it down recently for inspection. All looked great and within spec on measurements.
 
I ride with the Core EXP and have for a year now with no problems at all. Snow bikes in general will load your bike more period. That is why guys are going to big bikes for snow bikes and you dont see them riding them in the summer in a lot of instances.
That being said you will be on the throttle way more than you would typically be on your dirt set up so your engagement will be there when you apply the throttle. There are an addduitional set of heavier weights that are available form Rekluse for the winter set up if you find you need heavier enagement. I would go with the whole Core set up as you get more oil in the bike with the bigger cover which will make a difference if your actually going to use the bike in the summer as well.
 
I've just bought a brand new 2012 KTM 500 EXC.
My previous bike was a 2007 YZ450F with a Core EXP clutch. Worked great and I want the same type of clutch on my new bike.

I can't see any Core EXP clutches for the KTM 500 EXC och their website.
The only avaliable option is a simpler EXP but Rekuse clearly states that the EXP is
"NOT FOR USE WITH BIG BORE KITS OR SNOWBIKE APPLICATIONS"
http://rekluse.mybigcommerce.com/pr...7}XC%2dW-EXP-clutch-2012-(PRE-ORDER-NOW).html

Seems to be more parts on the EXP for the 2012 KTM bikes. Are they stronger/better than other EXPs?

EXP or no rekluse at all for my bike? :face-icon-small-dis
Please help!
 
I've got answer from the scandinavian Rekluse distributor.
The Core EXP for the 2012 KTM500 is under development and testing.
It's just a matter of time until they put it on offer.

Fingers crossed that they have it ready until snow :face-icon-small-coo
 
Had the EXP on my 2012 WR450 slipped like a bugger and

has a stupid hard clutch pull.

There was significant wear within 3 rides . It looses to much clutch surface .

Took it of and put in the Z star pro -- in my experience it is still the best

recluse product out there.

Even the COR EXP has some weird chatter

and is just not as consistent as the Z star pro.

Snow kit going on this winter .
 
Rekluse for 2012 KTM 500 EXC

I got my Rekluse in February for the new 2012 KTM 500 EXC (first one apparently) and probably have 20 days with the MH kit on it. Just call Rekluse up and they will ship you the right stuff. There is a minor footnote for the manual clutch over-ride you have to do that wasn't in the instructions - they can let you know how to adjust it perfectly. I love the Rekluse on the MH kit. I just switched back to wheels and now love it in the dirt too. For next winter season, I will get slightly heavier setting for the Rekluse so that it engages at a higher RPM (they call this the Snow bike kit). I found that sometimes the RPMs weren't up quite high enough to gain power when the clutch engages in heavy wet snow. It was never an issue when starting in 1st gear but sometime you need to really punch it in 2nd to launch off of something or get unstuck etc. Rekluse staff will be able to set you straight on what weights, ramps etc you need for the track kit and wheels.
 
I figured I would follow up on this. After talking with Rekluse I decided to go with the Core EXP instead of just the EXP. They say the Core EXP has better clamping due to the extra friction disks and cools better because of the extra oil ports in the center clutch. They also suggested I go with the heavy springs (blue) for more clamping force.

In case anyone cares here are the various things you can tweek with the EXP:

- Springs in the EXP = RPM the engagement starts at
- Wedges in the EXP = How quickly the clutch engages
- Clutch Plate Springs = Clamping force
 
Rekluse had me upgrade from the EXP to the full core. My bike is a 08 300 xcw also told that the snow bike kit is too much for the EXP. I thought it would be ok since it's not a big thumper like everyone else has. I was visiting a friend in Boise so I stopped in and picked up the parts needed. Pre called ahead and they had the parts waiting for me. Got a quick tour just in time before closing. Also check out the new clutch slave that just came out. I got one account mine was bad and already rebuilt it once. Pretty slick and easy to do. The new core kits come with it so no more taking clutch cover off to adjust.
 
What are the advantages, can't you just slip the clutch manually on a snowbike to get the RPM's up or is it primarily for when you tip over and want to keep it running?
 
What are the advantages, can't you just slip the clutch manually on a snowbike to get the RPM's up or is it primarily for when you tip over and want to keep it running?

I could be in the minority but I think a Rekluse is less useful on a snowbike than a dirt bike. Last winter I didn't run a Rekluse in my snow bike and for the most part didn't miss it.

That being said, I run a Rekluse in all my bikes during the summer. Its like having a really smart lemur on your handlebars doing the clutching for you. Since using a Rekluse is so ingrained in my riding style it made sense to upgrade to the Core EXP and use it with the MH this season.

If you don't use a Rekluse normally then it probably won't make much difference to you.
 
I was told by rekluse not to use either of the cores but use the zstart pro with 6 tungstun balls on my 570,,been using a rekluse for so long I forgot how to ride without one!!
 
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Hey folks, I am now looking at Rekluse's for my 300 XC-W that will be ridden in summer and winter. The Z-Start Pro sounds like the way to go - especially given I am novice rider but if the Core EXP is going to be significantly better, then I'll spring for that. Any advice is appreciated. It sounds like the straight up EXP is out of the question for a snow bike. Thanks, JC
 
have a core exp on my 300xc and love it, still feels like a clutch, my buddy put in the z start on same bike and feels very jumpy at times and the clutch tension comes and goes with it. He may not have had it set up right though. If I buy another one it will be a core exp, excellent machined components, way tougher looking than stock. I have a 12 and 13 kx450, 13 has the timbersled on it, thinking about the core exp on it soon but wondered about the set up differences btwn snow and dirt.
 
have a core exp on my 300xc and love it, still feels like a clutch, my buddy put in the z start on same bike and feels very jumpy at times and the clutch tension comes and goes with it. He may not have had it set up right though. If I buy another one it will be a core exp, excellent machined components, way tougher looking than stock. I have a 12 and 13 kx450, 13 has the timbersled on it, thinking about the core exp on it soon but wondered about the set up differences btwn snow and dirt.


I have the Core EXP on my 2012 YZ450F with a 2013 Timberlsled installed. After talking with Rekluse they said it was a different set up from the dirt. They wanted me to install the heavy duty spring kit and different wedges in the expanding ring. They also said when I installed the wedges and went back together with expanding ring they wanted me to use all of the blue spring instead of gold on one side and blue on the other. Also just so you know the heavy duty springs and wedge kit are an extra $100 on top of the price of the clutch if that is the setup that they recommend with your bike. Hope that helps.
 
I can echo what's being said in this thread.... heavier springs and wedge kit is a must. My EXP 2.0 is such a great addition to the snowbike setup that I consider it a "mandatory luxury" but not a mandatory baseline item.

One problem I did run into was that I wasn't getting enough freeplay gain on the clutch lever. This indicated that my clutch had adjusted too far out and that I was running the risk of wearing my friction plates too fast. I laid the bike over, pulled the cover and adjusted the clutch back to "1 full turn plus 2 marks" and my freeplay gain was back. Apparently freeplay gain is the most important indicator of clutch health.

Another cool thing I like about the EXP 2.0 is that I can convert it to a "stock" clutch at anytime. Just loosen the lock bolts and adjust the clutch to the start of your finger tightness (before you do your 1 full turn), tighten lock bolts, and now you have a normal clutch back. Doesn't look like you can be left in the woods due to a malfunctioning or slipping Rekluse.
 
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