RCB S3 ALLOY LEVER SET XSR INDO

RCB S3 Alloy Lever Set is a premium, ergonomic control upgrade designed specifically for the Indonesian-specification Yamaha XSR 155 (XSR Indo).

The S3 Series replaces the standard non-adjustable factory cast levers with a refined, CNC-finished assembly. It is engineered to give riders micro-adjustable reach settings, improved finger leverage, and an aggressive, modern-classic aesthetic that seamlessly integrates with the XSR’s neo-retro styling.

Important Variant Note: The Indonesian variant of the XSR 155 features distinct master cylinder master-piston and clutch perch bracket spacing compared to variants sold in other global markets. This specific kit is machined to match the Indo-spec layout flawlessly, ensuring smooth mechanical clearance, precise engagement, and zero vertical lever wobble.

Key Features

• Premium Billet Alloy Construction: Milled from high-strength T6 tempered aluminum alloy, providing a superior strength-to-weight ratio over brittle OEM cast levers. They are highly resilient against bending or snapping during minor accidents.

• Adjustable Reach Dial: Features a precise, multi-position adjustment clicker 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 while minimizing forearm fatigue.

• Foldable Anti-Break Design: Incorporates an articulated pivoting joint configuration. In the event of a low-side slide or a stationary tip-over, the levers fold upward instead of snapping off at the perch, ensuring you aren’t left stranded without a clutch or front brake.

• 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 highway speeds.

• Hard-Anodized Armor Finish: Coated in rich metallic colors (such as Black, Gold, Red, Blue, and Silver) to lock out moisture and prevent color bleaching caused by intense UV exposure or aggressive bike washes.

   

Technical Specifications

Installation Guidelines

1. Drop-In Compatibility: The S3 lever kit features XSR Indo-specific mounting adapter blocks, making it a direct drop-in replacement for the stock master cylinder and clutch perch without requiring modifications.

2. 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. Clamping the lever too close to the handlebar without adjusting the cable can cause premature clutch slipping and accelerated clutch plate wear.

3. 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.

4. 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 VVA single-cylinder power plant don’t back the fasteners out over time.