Recommended Additional Upgrades
01
S1 FL 30th Anniversary Special Edition Brake & Clutch Set
Get the Combo set for the ultimate brake system upgrade.
RCB S3 Alloy Lever Set is a premium, ergonomic control upgrade designed specifically for the Suzuki GSX-R150 and GSX-S150 platform.
The S3 Series replaces the standard, non-adjustable factory cast levers with a highly refined, CNC-finished assembly. It is engineered to provide riders with micro-adjustable reach settings, improved finger leverage, and a sleek, aggressive aesthetic that complements Suzuki’s lightweight sport and street chassis.
Key Features
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Premium Billet Alloy Construction: Milled from high-strength aluminum alloy, offering a superior strength-to-weight ratio over brittle OEM cast levers. They are highly resistant to bending or snapping under accidental mechanical impact.
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Adjustable Reach Dial: Features a precise, multi-position adjustment dial that allows you to easily fine-tune the distance between the handlebar grip and the lever. This provides tailored comfort for both small and large hand sizes, maximizing control and minimizing forearm fatigue.
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Ergonomic Comfort Grooves: Shaped with smooth, rounded finger channels and an optimized surface profile that enhances tactile feedback and grip precision during rapid downshifts or hard, two-finger emergency braking.
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Foldable Anti-Break Design: Incorporates a pivoting joint configuration. In the event of a low-side slide or a stationary tip-over, the levers fold upward instead of snapping off, ensuring you aren’t left stranded without a clutch or front brake.
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Aerodynamic Cut-Out (Wind Slot): Designed with a high-speed relief slot at the lever tip. This reduces aerodynamic drag and prevents “wind-induced brake drag” at high track speeds.
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Hard-Anodized Armor Finish: Coated in rich metallic colors (such as Black, Gold, Red, and Blue) to lock out moisture and prevent color bleaching caused by intense UV exposure or aggressive garage cleaning chemicals.
Technical Specifications
| Feature | RCB S3 Alloy Lever Details |
| Series | S3 Adjustable Series |
| Material Base | CNC-Finished High-Tensile Aluminum Alloy |
| Adjustment Mechanism | Multi-Stage Adjustable Dial |
| Lever Profile | Foldable / Ergonomic 3-4 Finger Length |
| Primary Compatibility | Suzuki GSX-R150 / GSX-S150 (All Generations) |
| In the Box | 1x Front Brake Lever, 1x Clutch Lever Assembly |
Installation Guidelines
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Drop-In Compatibility: The S3 lever kit features Suzuki-specific mounting adapter blocks, making it a direct drop-in replacement for the stock master cylinder and clutch perch without requiring modifications.
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Maintain Clutch Freeplay: When installing the S3 clutch lever, ensure you adjust the cable tensioner to retain the factory-recommended 10mm to 15mm of freeplay at the lever tip. Pushing the lever too close to the handlebar without adjusting the cable can cause premature clutch slipping and wear.
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Lubricate the Pivot Points: Apply a light layer of lithium or marine-grade grease onto the main shoulder bolts before sliding them into the pivot perches. This ensures incredibly smooth fluid movement and eliminates any stiff “metal-on-metal” rubbing.
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Threadlocker Safety: Secure the pivot pins and lock nuts using a drop of medium-strength blue threadlocker (e.g., Loctite 242) to guarantee that constant engine vibrations from the high-revving GSX-150 single-cylinder power plant don’t back the fasteners out.

































