Motorcycle Brake Disc - Brembo - 78B40838
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Product Information
Full details
The Brembo 78B40838 Serie Oro brake disc is designed for motorcycle riders seeking superior braking performance and durability. It offers enhanced stopping power and efficiency in various weather conditions. A potential consideration is that it is a floating disc, which requires specific considerations during installation and maintenance compared to fixed discs.
All features
| Model Part Number | 78B40838 |
|---|---|
| Brand | Brembo |
Extended Product Information
FAQs
What is the difference between a floating and a fixed brake disc?
A fixed disc is a single piece, rigidly attached to the hub. A floating disc has two parts: a rotor and a hub (hat), connected by fasteners (often called 'buttons' or 'pins'). The floating design allows the rotor to move slightly relative to the hub, which helps manage thermal expansion and reduces the risk of warping under stress.
Do I need to replace my brake pads when installing new discs?
It is highly recommended to replace your brake pads whenever you install new brake discs. New pads paired with new discs ensure the best performance and prevent premature wear or glazing of the new disc surface by old, possibly glazed or worn pads.
What does 'Serie Oro' mean?
'Serie Oro' translates to 'Gold Series' in Italian. It represents Brembo's premium line of motorcycle brake discs, characterized by high-quality materials, advanced technology, and superior performance.
How do I perform the bedding-in procedure for these discs?
The exact procedure can vary, but generally involves a series of moderate to hard stops from different speeds, without fully stopping the motorcycle. This process allows the brake pads and disc surfaces to mate evenly, ensuring optimal friction and preventing hotspots or glazing. Refer to Brembo's specific guidelines or your motorcycle's service manual.
Can I use any brake pads with the Brembo Serie Oro discs?
While the discs are designed for high performance, it's best to use brake pads recommended by Brembo or your motorcycle manufacturer for optimal results and compatibility. Using incorrect pads could compromise performance or damage the disc.
What is the outer diameter and thickness of this disc?
The outer diameter is 296 mm, and the brake disc thickness is 4.5 mm.
Is this disc suitable for all weather conditions?
Yes, the product description states that the discs are efficient in all weather conditions, including heat, rain, and cold, ensuring consistent braking performance.
Troubleshooting
Brake judder or vibration during braking
Ensure the disc is properly seated and torqued. Check for warped rotor or uneven pad material transfer. Verify the wheel bearings are in good condition. A proper bedding-in procedure may resolve minor issues.
Reduced braking performance
Check brake fluid level and condition. Inspect brake pads for wear and contamination. Clean the disc surface. Ensure there are no air bubbles in the brake lines. Verify the floating mechanism is not seized.
Noisy brakes (squealing or grinding)
Contamination on the disc or pads can cause noise. Clean both surfaces. Worn pads can cause grinding. Uneven rotor surface can cause squealing. Anti-squeal shims may be needed if applicable.
Disc appears scored or damaged
Inspect for foreign objects trapped between the pad and disc. Heavy scoring may indicate a need for disc replacement. Ensure brake pads are not worn past their limit.
Pros and Cons
Pros
- Significantly improved braking power and feel.
- High-quality construction ensures durability and longevity.
- Efficient performance across diverse weather conditions.
- Designed as a direct replacement for ease of installation.
- Floating design offers performance benefits and reduced stress.
Cons
- Floating discs may require more precise installation than fixed discs.
- Higher performance may lead to faster wear on brake pads if not matched appropriately.
- The premium quality and materials come at a higher price point.
- Requires proper bedding-in procedure for optimal performance.
Setup, Compatibility & Care
Setup:
- Preparation: Ensure the caliper and mounting surfaces are clean. Remove any old brake fluid or debris.
- Installation: Mount the Brembo Serie Oro floating disc onto the hub using the specified fasteners. Ensure all bolts are torqued to the manufacturer's specifications for your motorcycle model. If replacing a fixed disc, ensure the floating mechanism is correctly seated.
- Brake Pad Alignment: Verify that the brake pads align correctly with the rotor surface. Floating discs allow for minor adjustments, but significant misalignment may indicate other issues.
- Brake Fluid: Flush and replace the brake fluid with a fresh, high-quality fluid that meets your motorcycle's specifications.
- Bedding-in: Follow the manufacturer's recommended bedding-in procedure for new brake discs and pads. This typically involves a series of moderate to firm stops without bringing the vehicle to a complete halt, allowing the surfaces to mate properly and preventing glazing.
Compatibility:
- Fitting Position: Front Axle (Left side specified by product details).
- Interchangeability: Designed to be fully interchangeable with original production discs for the specific motorcycle model. Always confirm fitment with your motorcycle's make, model, and year.
- Rotor Style: Perforated, two-piece floating disc.
- Dimensions: Outer diameter: 296 mm, Brake Disc Thickness: 4.5 mm, Number of Holes: 6.
Care:
- Cleaning: Regularly clean the disc surface with a motorcycle-specific brake cleaner to remove dust, dirt, and contaminants. Avoid using harsh chemicals or abrasive materials.
- Inspection: Periodically inspect the disc for signs of wear, scoring, or warping. Check the fastener screws connecting the rotor to the hat for tightness.
- Pad Wear: Monitor brake pad wear. Worn pads can damage the disc surface. Replace pads promptly when they reach their minimum thickness.
- Storage: If the motorcycle is stored for extended periods, ensure the braking system is clean and dry to prevent corrosion.