The fork swap is finally done! I haven’t been able to ride it yet as I finished it up late last night and the next couple days are stormy. I can’t freakin’ wait though. 
I’ll try to make a list of major parts here, why I picked them, and note things that I ran into for others that may venture into this.
First gen Z1000 Upper and Lower Triple Trees – These are kind of a rare part and finding them available along with a desire for functional suspension is what kicked off the whole project for me. They’re needed if you want to run standard 7/8” bars. The bars are now rubber mounted which should cut down on vibes. You could go with other triples if you’re okay with clip-ons or clip-on risers. The lower triple has steering stops the same as the 650’s. I didn’t have to fabricate or modify my own. The upper locates the ignition switch in the same place as the 650’s so my steering lock still works. Sanding and stripping the old flaking paint off these was such a pain! Wish I had a sand blaster. The lower triple was noticeably lighter than the 650’s despite being much beefier.
Donor z1000 ignition switch – There’s a plastic cover that slips over the main body of the switch. It’s a little smaller in diameter than the 650’s. Without it the 650 switch won’t fill the hole in the upper triple. I removed the 650’s cover and ground off a small rib from the switch body and the z1000’s cover fit right on. It’s plain plastic and the 650’s similar piece has the printing on it for ON, OFF, LOCK, PARK or whatever they are so I lost that printing. No biggie.
2006 636 forks – Any year should fit so long as they’re upside down and not the Big Piston Fork design. Pay attention to rotor diameter though as you may need different spacers and mounting bolts. These got fresh seals and oil. I painted the upper tubes to hide blemishes in the gold anodize. Any work to USD forks requires compressing the springs which is not my favorite thing. You’ll need to make or buy a tool for this. You’ll need a 32mm socket to remove the fork cap also. HF to the rescue.
2005 636 wheel – Necessary as a larger diameter axle is used (which is a nice lightweight aluminum one also). edit: not specifically this year is necessary
2011 zx14 Brakes – The same Nissin brakes get used on lots of models. Tokico is what came stock on these forks but I’ve read the Nissins are better.
636 Fender – This is just a fiberglass race fender I painted. I went with black as I didn’t want to attempt matching the red.
Handlebars – I initially planned to reuse the 650’s bars but they’re too narrow in the clamp area to fit the z1000’s riser clamps. These in particular are Protaper Trials Mid Rise part 02-5307. They’re aluminum but not any lighter than stock due to the increased wall thickness and the cross brace. They came with a pad for the cross brace but it looked kinda silly so I removed it. I used the rubber hose trick to secure the bar ends as described by McRider in another thread.
Brake rotors – The 650’s swap right over.
Brake hoses – I already had Galfer SS intended for the 650. They still fit with no slack concerns.
You'll need a way to support the front end other than a triple tree stand. I used an A frame ladder and after removing the tank had good access to the frame rails for strapping to. No mods were needed to the rest of the bike besides slightly shimming the coolant reservoir. The lower triple would bump into it before hitting full lock.
My main goal in doing this was to improve front suspension and I think I’ll be very happy with it. I like to be different too and there aren’t TOO many 650’s running around with these. These are .90 springs. I’m right in between .90 and .95 but only ride street so lighter should be good. It’s been a lot of work procuring and refinishing parts though. Had I known it would be this extensive, I may have just went with springs and emulators for my stock forks. These are externally adjustable for preload, rebound damping, and compression damping. I got a brake upgrade also. I never had a complaint with the 650’s brakes but these won’t hurt.
If anyone needs some stock parts, let me know.
http://www.riderforums.com/ninja-650r-sale-trade/82637-2007-650r-nearly-complete-front-end.html
That’s all I got. Let me know if you have any questions.


I’ll try to make a list of major parts here, why I picked them, and note things that I ran into for others that may venture into this.
First gen Z1000 Upper and Lower Triple Trees – These are kind of a rare part and finding them available along with a desire for functional suspension is what kicked off the whole project for me. They’re needed if you want to run standard 7/8” bars. The bars are now rubber mounted which should cut down on vibes. You could go with other triples if you’re okay with clip-ons or clip-on risers. The lower triple has steering stops the same as the 650’s. I didn’t have to fabricate or modify my own. The upper locates the ignition switch in the same place as the 650’s so my steering lock still works. Sanding and stripping the old flaking paint off these was such a pain! Wish I had a sand blaster. The lower triple was noticeably lighter than the 650’s despite being much beefier.
Donor z1000 ignition switch – There’s a plastic cover that slips over the main body of the switch. It’s a little smaller in diameter than the 650’s. Without it the 650 switch won’t fill the hole in the upper triple. I removed the 650’s cover and ground off a small rib from the switch body and the z1000’s cover fit right on. It’s plain plastic and the 650’s similar piece has the printing on it for ON, OFF, LOCK, PARK or whatever they are so I lost that printing. No biggie.
2006 636 forks – Any year should fit so long as they’re upside down and not the Big Piston Fork design. Pay attention to rotor diameter though as you may need different spacers and mounting bolts. These got fresh seals and oil. I painted the upper tubes to hide blemishes in the gold anodize. Any work to USD forks requires compressing the springs which is not my favorite thing. You’ll need to make or buy a tool for this. You’ll need a 32mm socket to remove the fork cap also. HF to the rescue.
2005 636 wheel – Necessary as a larger diameter axle is used (which is a nice lightweight aluminum one also). edit: not specifically this year is necessary
2011 zx14 Brakes – The same Nissin brakes get used on lots of models. Tokico is what came stock on these forks but I’ve read the Nissins are better.
636 Fender – This is just a fiberglass race fender I painted. I went with black as I didn’t want to attempt matching the red.
Handlebars – I initially planned to reuse the 650’s bars but they’re too narrow in the clamp area to fit the z1000’s riser clamps. These in particular are Protaper Trials Mid Rise part 02-5307. They’re aluminum but not any lighter than stock due to the increased wall thickness and the cross brace. They came with a pad for the cross brace but it looked kinda silly so I removed it. I used the rubber hose trick to secure the bar ends as described by McRider in another thread.
Brake rotors – The 650’s swap right over.
Brake hoses – I already had Galfer SS intended for the 650. They still fit with no slack concerns.
You'll need a way to support the front end other than a triple tree stand. I used an A frame ladder and after removing the tank had good access to the frame rails for strapping to. No mods were needed to the rest of the bike besides slightly shimming the coolant reservoir. The lower triple would bump into it before hitting full lock.
My main goal in doing this was to improve front suspension and I think I’ll be very happy with it. I like to be different too and there aren’t TOO many 650’s running around with these. These are .90 springs. I’m right in between .90 and .95 but only ride street so lighter should be good. It’s been a lot of work procuring and refinishing parts though. Had I known it would be this extensive, I may have just went with springs and emulators for my stock forks. These are externally adjustable for preload, rebound damping, and compression damping. I got a brake upgrade also. I never had a complaint with the 650’s brakes but these won’t hurt.
If anyone needs some stock parts, let me know.
http://www.riderforums.com/ninja-650r-sale-trade/82637-2007-650r-nearly-complete-front-end.html
That’s all I got. Let me know if you have any questions.