Hi guys - I'm rebuilding an MC21 for a friend and I have a couple of queries.

He's supplied me with CBR900 calipers (and standard calipers) however the 900 calipers have threaded mounting holes, as do the forks, so I'm not happy with tightening them - has anyone else fitted them and did you just get the threads drilled out?
Secondly I need the Magtek disc bolts and fixings but I don't know which model to look up on the parts listings Does anyone know an alternative bolt, washer and nut etc or should we go with Honda fixings - if so can you point me in the direction of the parts list?!

Many thanks, Paul

The MC21SP has the Magteks.
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Poul
"If Life Gets Boring, Risk It!"
MC21SE, KISS box
MC21SP, HRC box, racing loom

Why change the brakes?

I weigh 85 kg + leathers and at 200 km/h, at the end of the straight, I can still lift the backwheel with two fingers on the brake. Its physically impossible to brake more than that.
_________________
Poul
"If Life Gets Boring, Risk It!"
MC21SE, KISS box
MC21SP, HRC box, racing loom

On my FJ1100, the threads stripped from the caliper (it's done 100,000 miles and being an 80's Yamaha needed regular brake cleaning) so I just used a nut and bolt!

You'll be fine to drill out the threads and use a bolt in its place, assuming the new diameter of the hole is the right diameter for the correct brake bolt for the threaded fork.

I would, but I'm sure many more wouldn't!

Thank you for the responses. It seems I can helicoil the Magteks and use a regular bolt without having to use a longer bolt going right through with a nut.
I have looked at some of the SP parts lists but I can only find short bolts. Does anyone know the exact model code or HRC listing that would show especially the Magtek with straight through bolts - I am rebuilding an MC21 but I don't think the owner necessarily bought a Magtek from an MC21 - it's a bit hit and miss...which is not good with brake fixings!!

I spend a lot of time on the Aprilia forums because I have 3 RS250s so it's nice to find like minded people all pulling together to make the hobby fun (especially with so much aggression in the World ). Thanks again, Paul

The bolt that you need is 6 X 120mm and the OEM code is 90105-KV3-720
This is the diagram.
http://redline-ci.com/part_books/Honda/0250NSR250R/mc21-100_8l/3_part_pages/f_10-1.asp
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Owner of : Honda NSR250 MC28 95sp colours / Honda NSR250 MC18 R6K SP / Honda RS250 NF5 89 in boxes / Honda C50 12V cub / Honda C50 12V super cub Japanese version /Yamaha XT600 89 benetton