Showa GD051 forks what year and what bike?

[junior varsity]

i was going to say 916 also - same fork cap tops, same brake mounts - you got 'em with TiNi coating on the fork sliders - that's a great fork you got. Like DP said - they are worth protecting. Bike has some good add ons, like those forks and the steering damper, and what appears to be the DP analog tachometer/speedometer housing.

but that brake line is WAY too long. reeeediculous long. good news for you is that my shelf of spares has a more appropriately sized brake line (red line with gold fittings from spiegler) and I have a red OEM SBK fender too. [i like to hoard things]  pm me if you are interested - i'm cheap to negotiate.

[junior varsity]

speedo cable should 'naturally' bow out towards the back of the bike from the wheel and gently bend upwards by the brake caliper and be fed up in front of the lower triple and into bottom of speedo, which should be the left analog gauge (or the only analog gauge if the gauge cluster isn't the DP like I thought it was, but is the OEM)

[MaaloX]

Thanks a m for the help and your offerings. I just received a black sb fender and it fits great. I would take you up on the offer for the brake line but since I am going to replace it I will either get black or stainless steel.

I just keep getting deeper into this. a m, I did notice another post where you were helping another member out with sb forks. My bike actually has 2 different color rims. The front is gold and the back is black...no not AC/DC but the color black

Anyway, I dont have a caliper to measure the actual size of the axle but I am going out on a hunch here and thinking that the rim is also from a sb.....

This bike is a love hate relationship. I bought it 2nd hand, and the guy I bought it from had no idea if anything had been done to it...just like myself. But then again I am learning a whole hell of allot. 

[junior varsity]

Your front rim? Could be a SBK or a SS, or newer Monster (though I don't think they came w/ gold wheels, just silver)

[EEL]

I concur on the 916 style. The caliper bolt pattern in of the older generation of ducatis. It cant be a monster because of the equal bumpout on the lower an upper portions of the fork where the triple clamps connect

Plus the red cap and the extended handle bar risers indicate a longer fork. Could be an really old set of 748 forks from 95,96 ish era. The nitriding is whats throwing me off. maybe it was done after the fact.

[junior varsity]

I think it's not limited to red caps (for longer forks), I recall discussing forks w Alain at Corse Motorsports in Nashville and I believe I remember learning that SS forks are also longer while still sometimes being nonadjustable!

That said, I think it's a good highlight about making sure you are measuring from the bottom of the forks up to a fixed spot (like the triple), rather than relying on a top triple / fork exposed-above measurement when changing forks. For maintaining original geometry that is - if you are adjusting that, then you are certainly going to start there and make changes.