Kawasaki Z900RS…Complete machine built by RCM at Sanctuary (serial number: RCM-777)
The frame has been reinforced with an OVER Racing aluminum subframe kit and a NITRO Racing aluminum down tube kit, which add a touch of style to the bike.
The front and rear wheels have been changed to O.Z Racing GASS RS-A Z900RS wheels, with sizes F3.50-17 / R5.50-17.
The swingarm is customized with a SCULPTURE Wide + Monaka-style stabilizer and racing stand hook, and the muffler is a NITRO Racing Weldraft 3D Titanium Full EX.
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The handlebars are Daytona aluminum separates (with bushings welded to the pipe ends), and the seat is a Daytona RCM Concept Cozy.
The bike is fitted with a half-type rocket cowl made by American Dream and a single round headlight. The front forks are reinforced with an inverted E×M package TYPE-II made by Ohlins.
The photo shows the “RCM-777,” based on the Z900RS and produced by RCM (Radical Construction Manufacture), a fully custom-made bike from the custom shop “SANCTUARY.”
“RCM” is a fully custom-made complete machine production system developed by Sanctuary, which started in 2000.
RCM primarily accepts applications for Japanese on-road sports models. Up until now, they have revived “treasured big bikes” such as the Kawasaki air-cooled Z series, various older Kawasaki Ninja models, Kawasaki Zephyr series, Suzuki Katana series, and Honda CB-F series as modern versions.
RCM’s latest model, the RCM-777, has been developed and is being introduced with new parts for the Z900RS, which will be released in 2025. The cowl stays have been modified and a rocket cowl developed and manufactured by “American Dream” has been lowered and fitted. The beautiful cafe racer style is finished in an exquisite unity with the gas tank and rear cowl.
Attached parts
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| Frame | NITRO Racing Aluminum Downtube Kit, OVER Racing Aluminum Subframe Kit (Black), NITRO Racing OVER Racing Subframe Adapter |
| Front and rear wheels | O.Z Racing GASS RS-A for Z900RS F3.50-17 / R5.50-17 |
| Front fork | Öhlins Inverted E×M Package TYPE-II (21FF5210 BLK forks, length 800mm, spring rate 0.85N/mm) |
| Front and rear tires | Pirelli Diablo Rosso Quattro F120/70-17/R190/50-17 |
| Front and rear discs | Front: Sunstar O.Z Wheel Works Expansion Band Φ320 Rear: Works Expansion Band Φ250 |
| Front and rear calipers | Front: Brembo CNC radial mount GP4-RX Rear: Brembo CNC 2P |
| Brake master cylinder | Brembo RCS Radial Pump for Corsa Corta Φ19 |
| clutch master cylinder | Koken Brembo style clutch lever |
| Brake and clutch levers | ZETA RCM Concept Flight Lever |
| Brake and clutch hoses | Allegri Sholto System |
| Handlebars | Daytona Aluminum Separator (Bushing welded to the pipe end) RCM Concept Grip End |
| Steering stem | SCULPTURE TYPE-II Stem Kit for Inverted E×M Package |
| Swingarm | SCULPTURE Wide + Monaka Stabilizer & Racing Stand Hook |
| Rear shock | Ohlins |
| Rear suspension reservoir tank stay | NITRO Racing Ohlins rear suspension preload adjuster stay |
| drive chain | EK525 Threed |
| engine | Fully standard *Currently under development RCM Concept Pulsar Cover |
| exhaust system | NITRO Racing Weldraft 3D Titanium Full EX + Grenade Titanium VIII Silencer (Heat Polished) |
| cooling system | NITRO Racing Round Wide Radiator Kit |
| Body Parts | Daytona RCM Concept Cozy Seat |
| Upper cowl | American Dream Upper Cowl Kit (lowered by machining and welding cowl stays) *Under development NITRO Racing Downtube-specific carbon undercowl |
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