The Ripple Rock Racing Top Triples are machined from 6061 billet aluminum is designed to work on all CB500/550 from 1971-1978. We have designed our optional Gauge Brackets to accommodate all the various stock instrument consoles that occurred on all three 500/550 models. The Billet Top triple will also adapt to aftermarket gauges such as our 1.9 inch Micro Gauges and our 2.25 inch Chromed Mini Gauges (using the Mini Gauge Bracket) and can take the stock ignition using our optional Key Mount. The overall design of the top triple is intended to be adaptive. We have mounting holes to accommodate our Mini Gauge Bracket, our Key Mount and our Deluxe Mini Gauge Bracket and LED Kit. This allows the builder to customize the top triple in many different ways.