I've decided it's time to return my 1971 Honda CB450 K4 back its original stock form. Above is a picture from this morning. Not heavily customized by any stretch but certainly not stock.
Below is a detailed list of the modifications. None of them permanent, and all of them easily reversible.
- 1968 CB350 K0 Headlight Shell (61301-286-670A)
- 1968 CB350 K0 Headlight Assembly (33100-286-672)
- 1972 CB450 K5 Fuel Tank
- 1972 CB450 K5 Side Covers
- Mikuni VM32 Round Slide Carburetors (pre-jetted, replacement carburetor boots)
- Light Throttle Return Springs (VM34/06)
- Choke Cable Adapters (002-351)
- Custom CNC machined aluminum boot adapters (Bruce)
- 2-1 throttle cable (SpeedMotoCo via Amazon.com)
- Choke cable (PU Universal Choke Cable for Mikuni Dual 28")
- K&N RC-1252 High Performance Air Filters
- Custom air filter adapters
- 6063 Aluminum Pipe: 57mm(OD) × 53mm(ID) × 300mm(L)
- 4-PLY 2.25" x 12" LONG TURBO/AIR INTAKE BLACK SILICONE HOSE
- Renthal Street Handlebars - Ultra Low - Silver
- Redwing KM-C 330 rear shocks
- Digital voltmeter
This was mostly of an exercise in curiosity a handful of years ago.
Mechanically this bike is in excellent condition. Relatively low miles and as far as I can tell the engine has never been apart. It runs fantastic and revs to the red line with no complaints, though I have rarely pushed it that far.
I also plan to install a modern regulator/rectifier and swap over to LEDs for the gauges, indicators, and tail light as I typically do on nearly all of my bikes.
This will be my "hot weather" project for the next month or so. Something to work on when it's too hot to gear up and ride.