Recommended Additional Upgrades
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S1 FL 30th Anniversary Special Edition
Get the Combo set for the ultimate brake system upgrade.
The RCB Clutch Cover for the Yamaha R15 V3/V4/M, MT-15, XSR 155, WR155R is one of the most iconic aesthetic and functional upgrades you can install. Often referred to as a “Clear Clutch Cover,” this component replaces the solid aluminum factory casing with a high-durability unit featuring a transparent window.
This allows you to see the internal clutch pressure plate and springs spinning in real-time, especially when paired with a colored UMA Racing Clutch Spring or the R15 V3/V4 Assist & Slipper Clutch mechanism.
Key Features
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High-Strength Polycarbonate Window: The “clear” part of the cover is made from a heat-resistant, impact-resistant polycarbonate. It is designed to withstand the high oil temperatures and internal pressures of a high-performance engine without clouding or cracking.
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CNC Machined Aluminum Frame: The outer housing is crafted from premium-grade aluminum, offering better heat dissipation than the stock cast cover.
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Improved Oil Circulation: The internal geometry is designed to ensure that engine oil continues to lubricate the clutch plates effectively while providing a “showcase” view of the mechanical action.
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Weather-Sealed Integrity: Features high-quality gaskets and O-rings to ensure that, despite the multi-piece construction, there are zero oil leaks, maintaining factory-level reliability.
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Premium Aesthetics: Available in various anodized finishes (typically Black, Silver, or Gold) to match your bike’s color scheme.
Technical Specifications
| Feature | RCB Clutch Cover Details |
| Compatibility | R15 V3/V4/M, MT-15, XSR 155, WR155R |
| Material | T6 Aluminum Alloy + Polycarbonate |
| Window Type | Clear / Transparent (Heat Resistant) |
| Installation | Direct Replacement (Bolts into OEM position) |
| Visual Effect | Visible Rotating Clutch Assembly |
Why Install the RCB Clutch Cover?
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The “Racing” Look: It gives your small-displacement sportbike the “dry clutch” aesthetic found on high-end Ducati superbikes.
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Mechanical Monitoring: It allows you to visually inspect the condition of your oil and the movement of the clutch pressure plate without removing any parts.
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Customization Synergy: This cover is best paired with the UMA Racing Clutch Plate Set and Performance Springs. Seeing those high-performance parts in motion adds a level of mechanical “soul” to the bike.
Installation Pro-Tip
When installing the RCB Clutch Cover, you will need to drain your engine oil first. It is the perfect time to perform a full oil change and replace the clutch cover gasket. To keep the window crystal clear, always use high-quality fully synthetic oil and change it at regular intervals to prevent “sludge” from coating the inside of the polycarbonate.
