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Just got my bike back on the road today after an extended period of being in pieces in my garage. One of the mods is the installation of an EVR CTS01 slipper clutch. I've never ridden a bike with a slipper clutch before so before I purchased it I was unsure of the actual benefit.

I can say now that it was well worth it. Being able to backshift with impunity into a corner entry sure is fun. The clutch smoothly slips just enough to keep the rear wheel from locking up and provides just enough compression braking to smoothly setup for turns.

Other recent mods include an aluminum subframe, Speedcell Battery, and a very lightweight Mivv full ti 2-1 exhaust with Arrow collectors. The exhaust sounds great and the lighter overall weight of the bike is very apparent.
 

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it IS good!

Just wait till your at the track and go from 120MPH to 10MPH & 6th to 2nd in a blink of an eye for a hard left hander, the slipper clutch works "AMAZING!" :D I glad you like it! Aloha Alex

PS: do you have a picture of your exhaust? and will you be doing a dyno run?
 

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Eat, sleep, play!
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Discussion Starter #3
Just wait till your at the track and go from 120MPH to 10MPH & 6th to 2nd in a blink of an eye for a hard left hander, the slipper clutch works "AMAZING!" :D I glad you like it! Aloha Alex

PS: do you have a picture of your exhaust? and will you be doing a dyno run?
I'll post up some pics tomorrow. I've got to get the bike back on the dyno to see the effect of the Rapid Bike firmware update, fuel mapping changes I've made, and the new exhaust. The bike runs plenty strong, easily as good or better than before. Did a bunch of throttle roll on runs today and the bike seems dialed. I'll know for sure when I hook it up to the dyno sniffer.
 

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Like Alex said.... The slipper is even better on the track. But I do enjoy the extra bit of safety when cruising the canyons too. I've had the back end sliding around with the slipper but never a chatter at the wheel no matter how many gears I go down at one time!
 

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i just put a STM SBK slipper in mine and it was a serious help on the track. BTW the guy that i bought mine from has another listed on ebay right now cheap.
 

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Link from Mivv's site: http://www.mivv.it/en/prodotti_apri.asp?cl=1&cs=767

It seems to come with a pretty nice tail tidy, in my opinion.

I didn't realize how much difference a slipper makes at the track until I banged 1st gear on my slipper-less CBR. Holy pogo-stick!!

The only problem with a slipper clutch is once you've had one on the track, you find that now ANY bike you take to the track needs one...
 

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peter's hypertard is pretty sweet now ... he dropped by yesterday, and the exhaust looks and sounds awesome.
 

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Rumor has it you can't bump start? True?
 

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Discussion Starter #10
Rumor has it you can't bump start? True?
Don't know for sure, but I heard the same. Hopefully I won't have to find out!
 

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Discussion Starter #11
peter's hypertard is pretty sweet now ... he dropped by yesterday, and the exhaust looks and sounds awesome.
John, thanks for the directions through the hills yesterday. Really enjoyed those roads!
 

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No bump starting, but some brands like STM have an extra bit of kit you can buy that essentially locks the hub so you can bump start... I would hope all slipers have this capacity since it is a race item!
 

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What happens when near past vertical on the back wheel and you chop the throttle, hoping to come back down?


Slippers and Crutch??
 

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..... The clutch smoothly slips just enough to keep the rear wheel from locking up .....
I hope that's not the main reason you got 'em slipper clutch :D Coz if you've been riding without it and you lock up... errr... :think:

Btw, if one actually relies taps the rear brakes or even a light press at the wrong time, during hard braking and down shifts, lockups of the rear will still occur ;)

Personally, I dislike the slipper clutch. During my final year of racing, which was on a 999, I told them to remove the slipper clutch. This helped greatly during launches at the grid. Had to, when racing against inline 4's a good start is a must. I find that slipper clutches suck big time for starts.
 

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Discussion Starter #16
I hope that's not the main reason you got 'em slipper clutch :D Coz if you've been riding without it and you lock up... errr... :think:

Btw, if one actually relies taps the rear brakes or even a light press at the wrong time, during hard braking and down shifts, lockups of the rear will still occur ;)

Personally, I dislike the slipper clutch. During my final year of racing, which was on a 999, I told them to remove the slipper clutch. This helped greatly during launches at the grid. Had to, when racing against inline 4's a good start is a must. I find that slipper clutches suck big time for starts.
Locking up the rear wheel hasn't been a problem prior to the slipper clutch. I got it just for the hell of it. I'm no racer but I do enjoy a good ride through the canyons and goaty twisty roads. With the slipper, I find that riding requires less effort when setting up for a turn on crappy pavement. I did notice that the clutch engages further out and that did require some adjustment.
 

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I have to admit that I miss the slipper on my MTS 620 (the 620's had a slipper as stock). The engine braking on the Hyper can get tiresome during a fast, back road blast with a lot of tight, 2nd gear turns...

Is the slipper an easy self-install item? I'm definitely in the mechanically-inclined group, but I don't have any direct experience with this mod... are there any specific tools necessary that a normal guy wouldn't already have?
 

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Discussion Starter #18
I have to admit that I miss the slipper on my MTS 620 (the 620's had a slipper as stock). The engine braking on the Hyper can get tiresome during a fast, back road blast with a lot of tight, 2nd gear turns...

Is the slipper an easy self-install item? I'm definitely in the mechanically-inclined group, but I don't have any direct experience with this mod... are there any specific tools necessary that a normal guy wouldn't already have?
Its pretty simple to install. You'll need a clutch hub holding tool. Other than that, some sockets, a medium range torque wrench and a big torque wrench to tighten the main nut. An impact also comes in handy too.
 
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