Okay, facts upfront, this will hopefully make it a straight forward point of view.
2005 Yamaha YZ450F (4speed Trans)
14/51 "factory" gearing
I installed the Rekluse CoreEXP 2.0, not the regular CoreEXP, not the EXP 2.0, not the zStar Pro...
When, reading up on the Rekluse discussions it has been a nightmare, I believe the "not so" straight forward naming used for the Rekluse products is partly to blame, but, anyway...
Now, that I am in the know, I wish for others to know:
Rekluse EXP 2.0 - Rekluse 2.0 expanding disc technology ring. This setup replaces some of your factory friction discs (4-5ish) and steels with the Rekluse EXP 2.0 disc making your clutch automatic, can takeoff/stop in 1st gear with throttle only no clutch lever action required, clutch action is "not normal" (stiffer), but, remains "usable". Amount of friction material is significantly less than stock, thus weaker clutch lockup and lowered longevity. (this is NOT what I installed)
Rekluse CoreEXP - Rekluse 1.0 expanding disc technology ring, clutch center, pressure plate, larger clutch cover and steels. (uses factory basket) This setup uses 7 of your factory friction discs on a new clutch center, with new steels and a new pressure plate. The EXP ring replaces some of your existing frictions but not many (2ish). This makes your clutch automatic, can takeoff/stop in 1st gear with throttle only no clutch lever action required, clutch action is "normal", and remains entirely "usable". Amount of friction material remain basically stock, thus allowing for strong clutch lockup and longevity. (this is NOT what I installed, I installed v2.0)
Rekluse vStart Pro - Rekluse ball action clutch, I don't know everything about this product, but, it has a more "centrifugal" type action. Basically stock friction material, means strong clutch lockup and good lifespan. Comes with basically the full kit, inner clutch, pressure plate etc. (still no basket) Very adjustable, but, fiddly. (this is NOT what I installed)
Rekluse CoreEXP 2.0 - Rekluse 2.0 expanding disc technology ring, clutch center, pressure plate, larger clutch cover and steels. (uses factory basket) This setup uses 7 of your factory friction discs on a new clutch center, with new steels and a new pressure plate. The EXP ring replaces some of your existing frictions but not many (2ish). This makes your clutch automatic, can takeoff/stop in 1st gear with throttle only no clutch lever action required, clutch action is "normal", and remains entirely "usable". Amount of friction material remain basically stock, thus allowing for strong clutch lockup and longevity. (this IS what I installed)
EXP 1.0 vs 2.0 - This is the design of the "expanding disc" rekluse has come up with. 1.0 is single sided, with all the bolts facing one direction, has to be fitted in a specific direction. The 2.0 is double sided, can be fitted either direction and has half the bolts facing one side, half facing the other. The 2.0's wedges (or weights) that fly out expanding the disc under speed, contain ball bearings helping them glide with a much more "normal" action every time rpm builds, this is a feature the 1.0 disc is lacking.
Now, onto my findings.
So, I came to the conclusion of getting the full deal CoreEXP 2.0.
Many have said this clutch feels grabby and not "smooth" enough with it's lockup to be used on tight trails. (light wedges can be used (not included) for softer lockup and heavy wedges for stronger lockup (again, not included). This initially put me a little off and I felt like I would need the "light" wedges for the trails and tight technical riding I am doing, but, with advise from rekluse, they said try it first! so I did.
The CoreEXP 2.0 was an easy install, as per the video on the Rekluse website it was a breeze, I would strongly recommend watching the video demo rather than the manual as they conflict a little and to be honest the video is much easier to follow and lacks some of the mistakes in the instructions.
I adjusted the clutch to "one full turn" from the starting point on the pressure plate (as per video), my clutch free play (NOT free play gain) was fine, didn't need adjusting.
Then, I did (as per the instructions), put the bike into first gear with the clutch in, release the clutch while in gear, make sure it doesn't move forward... (fine).
Next, 20 starts in 2nd gear... then another 10 in 3rd. (no clutch lever, just throttle). (this all went very well).
Came back the garage, let the bike cool, then took off the cover again.
Unwound the pressure plate adjuster, then one full turn plus two marks from the starting position (as per video).
Bolted it back together...
In neutral, held the lever free play in, then revved the bike, I have just what the video said, about an 1/8" free play gain on the lever. (perfect!)
Threw it in first and took off!
NO PROBLEMS AT ALL!
Clutch action for my weight (240lbs) is perfect, beautifully smooth, not tough lockup, but, not over slipping either!
All I can say is the recommended settings for this unit are perfect (for my weight), in the tight stuff, beautiful not harsh at all, not light at all, just perfect.
I tried doing a manual over-ride holeshot also, first with the clutch in, rev it, dump it... bang, first, second, third, fourth... wheel spin all the way, just awesome!
I cannot rate this product enough, and at the end of the day have to say the people at Rekluse are bang on the money.
Don't consider the zStart or EXP (other than for cost), the CoreEXP 2.0 is the real winner, no matter what kind of riding your doing.
And for all those people who say learn to use the clutch, at the end of the day guys, (skill levels equal), you will always lose to the rekluse!
It enables you to ride those tracks you always wanted but, just couldn't with the constant feathering of the clutch.
Thanks Rekluse for bringing us a top product!
Ease of install 9/10 (only since it was hard for me to find a 9ft lb torque wrench for the PP springs).
Build quality 10/10 (so far, it's hard to take meaning on this as I haven't had it long, but, the quality of the components is top notch).
Thanks for reading guys.
Edited by STOIE, January 23, 2012 - 12:45 PM.