My 1975 CB550K1 started off as survivor-find on eBay:
My build/mods consisted of:
Engine:
Top-end engine build (gasket refresh)
APE HD cylinder studs to combat a persistent head gasket leak
New clutch and springs
Rebuilt and painted carburetors
NOS stator cover
Lossa Yoshimura Replica 4-1 exhaust with baffle and braket (stock exhaust rusted through)
Suspension:
Hagon Shocks
Tarozzi Fork Brace
Polished and clear powder coated lower fork stanchions
Forking by Frank fork tubes
NOS fork ears, reflectors
Rebuilt forks with Race Tech springs and Gold Valve Emulators
Voxonda fork pre-load adjuster/caps
All Balls steering bearings
Bronze swingarm bushings
Body:
Reproduction Seat Cover
Bobbed front fender
2 sets painted body work (Candy Jade Green and Planet Blue Metallic) tanks lined with Caswell and fitted with new badges
Reproduction side covers with new badges
Gas tank fuel level gauge
Controls:
NOS switchblocks
Tommaselli Condor Adjustable Clubman bars
Pro-Taper Clutch Lever/Perch
Wheels/Brakes:
Lester Mag wheels 19"F/18"R fitted with BT45s
All Balls wheel bearings
Goddfrey twin brake rotors (thinned and drilled)
Twin stock brake calipers from Goddfrey with phenolic pistons
Braided steel brake lines
Braking MC9601 Master Cylinder
Rebuilt rear brake
Billet brake stabilizer
Electrical:
New custom wiring harness, solid-state regulator/rectifier, blade-style fuseblock
LED headlight, LED Lucus-style taillight and new indicators
Earlier, First Evolution (using green body work and first version of fork brace)Painted tanksCurrent Evolution (Planet Blue Metallic, new fork brace, wheels, front end, etc.)