Not sure if anyone else has done something like this but i figured id post up my new clutch setup and mod. In classic ND4 fashion i like to make things reliable so here we go. (you can skip below the second === to get the mod)
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Backstory: I finally rounded out my bbk with a finbro superhead that i ported n polished up myself. Things are running amazingly good. The other day i missed a shift between first n second at WOT, wound it out to 12.5k and dumped it back into 2nd and was appalled at how much clutch slip there was, probably around 1.5-2 seconds before it fully grabbed (this was with EBC "10% stiffer" springs and the stock clutch plate). So i set out to get ye ole standard billet clutch plate and much stiffer springs.
I ended up with this
Honda Grom/MSX125 Billet CNC Clutch Plate Kit [WCR] - $49.99 : The Sic Shop, Stunt Parts Store
with 6 finbro springs. 67ish shipped for a nice billet piece and 6 MUUUUUCH stiffer springs.
So the other night i popped it in and took her out for a spin. Clutch grab was INSANELY better, lever pull not any worse than my other motorcycles, but you can actually clutch up a 2nd gear wheelie with ease now and full rev limit clutch dumps have almost zero slip.
Then i took a shit, and a shower, which allowed me to think (this is never any good).
This billet plate has identical tabs for all 6 spots which include a hole for one of the 3 stock bolts. I never liked how 3 of the springs were not captured by a bolt on either a stock or aftermarket clutch plate especially considering how much stiffer these new springs were. So i decided to change this.
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The stock pressure plate has 3 of its 6 spring standoffs threaded for 3 M6x1.00 x 20mm flange bolts. The other 3 standoffs just so happened to be already drilled with the right sized hole (a smidge under 5mm) to be tapped for M6x1.00 threads. In combo with my new billet plate that had each spring tab with a hole in it, things could work out well for a 6 bolt clutch. So i pulled the side cover back off. Pulled the clutch out of the bike so I could tap the predrilled unthreaded holes with an M6x1.00 tap i borrowed from a buddy. Went to the hardware store n picked up 3 M6x1.00 x 20mm flange bolts and then bolted everything back together. Now every spring is properly captured. There is no extra stress on the ears of the clutch lifter plate caused by springs not being properly captured and i feel much better now.
I did not take any pics of the disassembly or tapping process, but any clutch disassembly video will show you how to get to be able to pull the pressure plate out. But here is the final product. 3 OEM bolts and 3 new bolts properly holding the clutch all together in one big happy grippy family.
=====================================================================
Backstory: I finally rounded out my bbk with a finbro superhead that i ported n polished up myself. Things are running amazingly good. The other day i missed a shift between first n second at WOT, wound it out to 12.5k and dumped it back into 2nd and was appalled at how much clutch slip there was, probably around 1.5-2 seconds before it fully grabbed (this was with EBC "10% stiffer" springs and the stock clutch plate). So i set out to get ye ole standard billet clutch plate and much stiffer springs.
I ended up with this
Honda Grom/MSX125 Billet CNC Clutch Plate Kit [WCR] - $49.99 : The Sic Shop, Stunt Parts Store
with 6 finbro springs. 67ish shipped for a nice billet piece and 6 MUUUUUCH stiffer springs.
So the other night i popped it in and took her out for a spin. Clutch grab was INSANELY better, lever pull not any worse than my other motorcycles, but you can actually clutch up a 2nd gear wheelie with ease now and full rev limit clutch dumps have almost zero slip.
Then i took a shit, and a shower, which allowed me to think (this is never any good).
This billet plate has identical tabs for all 6 spots which include a hole for one of the 3 stock bolts. I never liked how 3 of the springs were not captured by a bolt on either a stock or aftermarket clutch plate especially considering how much stiffer these new springs were. So i decided to change this.
=====================================================================
The stock pressure plate has 3 of its 6 spring standoffs threaded for 3 M6x1.00 x 20mm flange bolts. The other 3 standoffs just so happened to be already drilled with the right sized hole (a smidge under 5mm) to be tapped for M6x1.00 threads. In combo with my new billet plate that had each spring tab with a hole in it, things could work out well for a 6 bolt clutch. So i pulled the side cover back off. Pulled the clutch out of the bike so I could tap the predrilled unthreaded holes with an M6x1.00 tap i borrowed from a buddy. Went to the hardware store n picked up 3 M6x1.00 x 20mm flange bolts and then bolted everything back together. Now every spring is properly captured. There is no extra stress on the ears of the clutch lifter plate caused by springs not being properly captured and i feel much better now.
I did not take any pics of the disassembly or tapping process, but any clutch disassembly video will show you how to get to be able to pull the pressure plate out. But here is the final product. 3 OEM bolts and 3 new bolts properly holding the clutch all together in one big happy grippy family.