Mavic R-SYS SLR: The Ultimate Climbing Wheelset

For the discerning cyclist who prioritises performance, especially when tackling demanding ascents, the Mavic R-SYS SLR wheelset has long been a benchmark. First introduced to the market and refined over the years, this wheelset has carved a niche for itself as a lightweight, stiff, and incredibly responsive option, particularly favoured by climbers and those who appreciate superior braking capabilities. This article delves into what makes the Mavic R-SYS SLR a sought-after component, examining its construction, technologies, and the benefits it offers to riders.

The Mavic R-SYS SLR: A Climbing Machine

The core philosophy behind the Mavic R-SYS SLR is to create a wheel that is both exceptionally light and remarkably stiff, thereby maximising power transfer and minimising the effort required to ascend challenging gradients. Mavic, a brand synonymous with innovation and quality in cycling components, has consistently applied its cutting-edge technologies to this wheelset, ensuring it remains at the forefront of performance.

Key Technologies Behind the R-SYS SLR

Several proprietary Mavic technologies are integral to the R-SYS SLR's performance:

• Exalith Braking Surface: This is perhaps one of the most distinctive features of the R-SYS SLR. Exalith is a special surface treatment applied to the rim's braking track, which significantly enhances braking performance, especially in wet conditions. It also contributes to increased rim durability and offers a unique, matte black aesthetic. The improved friction provided by Exalith means shorter stopping distances and better modulation, crucial for descending with confidence.
• Tracomp Technology: Mavic's Tracomp (Traction and Compression) technology involves the use of carbon fibre spokes. Unlike traditional metal spokes that primarily work under tension, Tracomp spokes are designed to work in both tension and compression. This innovative approach enhances lateral stiffness, improving handling and responsiveness, while also absorbing road vibrations for a more comfortable ride. The carbon spokes also contribute significantly to the wheelset's low weight.
• ISM (Inter Spoke Milling) 3D: To achieve its incredibly low weight, Mavic employs ISM 3D technology. This process involves milling excess material from the rim between the spoke holes. By carefully removing material without compromising structural integrity, Mavic achieves a lower rotational weight, which translates to quicker acceleration and easier climbing.
• SUP (Soude Usine Process): This refers to Mavic's rim joint technology, where the rim seam is arc-welded and then milled for a smooth finish. This creates a stronger and more balanced rim, reducing the likelihood of brake shudder and improving overall wheel durability.
• QRM SL (Qualité Roulements Mavic - Super Light): These are Mavic's high-quality, super-light bearings. They are designed for extremely smooth rolling resistance and are sealed to protect against the elements. The precision of these bearings ensures efficient power transfer and longevity.
• FTS-L (Force Transfer System Light): This technology relates to the rear hub's freewheel mechanism. It involves reinforcing the freewheel system to ensure efficient power transfer from the rider's pedalling effort to the rear wheel, even under heavy load.

Material Composition

The Mavic R-SYS SLR typically features a blend of advanced materials to achieve its performance goals:

• Rims: Constructed from Mavic's proprietary Maxtal alloy, known for its superior strength-to-weight ratio, Maxtal offers an excellent balance of durability and lightness. The rims are often finished with the Exalith treatment.
• Spokes: A combination of carbon fibre (Tracomp) for the non-drive side and Zicral (a strong aluminium alloy) for the drive side spokes is common. This strategic use of materials balances weight savings with the need for stiffness and durability on the drive side, where higher forces are applied.
• Hubs: Typically made from aluminium, the hubs house the QRM SL bearings and the FTS-L freewheel system.

Performance and Riding Experience

The Mavic R-SYS SLR is engineered to excel in specific riding scenarios:

• Climbing: The low weight and high stiffness make these wheels ideal for climbing. They accelerate quickly and maintain momentum with less effort, allowing riders to feel more efficient on ascents.
• All-Around Riding: While optimised for climbing, the R-SYS SLR is surprisingly versatile. The Exalith braking surface provides confidence-inspiring stopping power in all conditions, and the Tracomp technology contributes to a comfortable ride by absorbing road buzz.
• Cornering and Descending: The inherent stiffness of the R-SYS SLR translates to precise handling and predictable cornering. The improved braking from the Exalith surface also enhances control during descents.

Weight and Specifications

Weights can vary slightly depending on the specific model year and whether tyres and skewers are included, but the Mavic R-SYS SLR is consistently lauded for its lightness. A typical claimed weight for the wheelset (without tyres and skewers) is around 1295 grams. The rim depth is generally around 22mm for the front and 25mm for the rear, contributing to their aerodynamic profile without being overly susceptible to crosswinds.

Maintenance and Care

Proper maintenance is key to ensuring the longevity and performance of the Mavic R-SYS SLR:

• Brake Pads: Always use Mavic's specific Exalith brake pads. Using standard brake pads can damage the Exalith surface and compromise braking performance.
• Cleaning: Clean the rims and braking surfaces regularly with a mild soap and water. Avoid abrasive cleaners or solvents that could damage the Exalith coating.
• Bearings: While QRM SL bearings are sealed and durable, they may eventually require servicing. Check for play and ensure smooth rotation.
• Spokes: Periodically check spoke tension, though the Tracomp system is designed to be very stable.

Common Questions About the Mavic R-SYS SLR

Q: Are the Mavic R-SYS SLR wheels good for everyday riding?
A: Yes, the combination of their light weight, stiffness, and excellent Exalith braking makes them very capable for everyday riding, sportive events, and even racing.

Q: What kind of brake pads should I use with the R-SYS SLR?
A: You must use Mavic's specific Exalith brake pads. These are designed to work with the Exalith braking surface for optimal performance and to prevent damage.

Q: Can I use these wheels with tubeless tyres?
A: The R-SYS SLR is a clincher wheelset, meaning it is designed for use with standard clincher tyres and inner tubes. It is not a tubeless-ready wheelset.

Q: How do they compare to full carbon wheelsets?
A: While full carbon wheels often offer better aerodynamics due to deeper rim profiles, the R-SYS SLR excels in its overall balance of low weight, stiffness, and superior braking, particularly in wet conditions. For pure climbing and responsiveness, they are often considered superior to many carbon alternatives.

Q: Are replacement parts readily available?
A: Mavic parts can sometimes be specific, but common components like spokes and bearings are generally available through authorised Mavic dealers.

Conclusion

The Mavic R-SYS SLR wheelset stands as a testament to Mavic's commitment to performance cycling. Its innovative use of materials like carbon fibre spokes and advanced rim treatments like Exalith, combined with meticulous engineering, results in a wheelset that is incredibly light, stiff, and offers exceptional braking. For riders who demand the best when facing challenging climbs or need reliable stopping power in all conditions, the Mavic R-SYS SLR remains a compelling choice, offering a ride experience that is both exhilarating and confidence-inspiring.

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