Carbon Fiber Side Panels for the Yamaha R1M

Bestem manufactures 100% twill carbon fiber side panels engineered for the Yamaha YZF-R1M (2015–2019), including the ECU holder side frame fairing lower and left-side ECU panel cover. They replace bulky OEM plastics with pre-preg carbon, shaving weight while adding a lasting gloss weave protected against sun-ray yellowing.

What carbon fiber side panels fit the Yamaha YZF-R1M?

The R1M shares its chassis and bodywork architecture with the standard R1 and R1S across the 2015–2019 model years, so panels cut for that platform bolt directly to the R1M. Bestem's side-panel range for this generation includes:

• ECU Holder Side Frame Fairing Lower (SKU CBYA-R115-SPNL-T) — the lower side frame panel that carries the ECU mount.
• Left Side ECU Panel Cover Fairing (SKU CBYA-R115-ECUC-T) — also fits the FZ10/MT10 (2016–2018).

Both are direct-fit replacements that reuse the factory mounting points. No drilling, trimming, or adhesive modification is required for a stock chassis.

What are Bestem R1M side panels made of?

These panels are 100% twill-weave carbon fiber — the 2x2 diagonal pattern most riders associate with a premium finish. Bestem uses pre-preg layup rather than wet-lay, which gives more consistent resin-to-fiber ratio, cleaner edges, and tighter dimensional accuracy panel-to-panel. The visible surface is a full carbon skin, not a carbon-look print over fiberglass.

How much weight do they save?

Carbon side panels typically run a fraction of the mass of the equivalent injection-molded OEM covers, with savings measured in the tens to low hundreds of grams per piece depending on the panel size. On a machine like the R1M, where every gram of unsprung and bodywork weight matters on track, converting multiple side panels compounds the reduction.

Do carbon fiber side panels turn yellow in the sun?

Standard carbon fairings do — the clear coat ambers and clouds under UV exposure, and it's the single most common complaint riders have about aftermarket carbon. Bestem addresses this directly with a proprietary UV-resistant coating engineered to shield the weave from sun-ray yellowing.

Bestem's coating protects roughly 3,000 hours of UV exposure versus about 1,000 hours for standard OEM carbon clear coat — 3x longer before ambering sets in.

Because of that coating, every Bestem carbon part carries a lifetime warranty against sun-ray (UV) yellowing. For a bike that lives outdoors or spends full days in the paddock sun, that's the difference between a panel that stays black and one that goes brown.

How do they compare to OEM R1M carbon?

The OEM R1M ships with genuine carbon in select areas, but its clear coat is not UV-optimized to the same degree — expect yellowing on the same timeline as standard carbon. Bestem's advantage is the coating and the pre-preg consistency, not just the raw weave. As a company manufacturing carbon since 2005 and supplying OEM carbon parts to car and motorcycle manufacturers, Bestem builds these panels to fitment and finish standards that hold up alongside factory bodywork.

What else can you carbon out on the R1 platform?

Riders building a matched R1M often pair the side panels with other 2015–2019 twill pieces: the tail center panel / rear seat cover, the seat bracket battery holder cover, heel guards, and the chain guard. Keeping to one weave and one supplier ensures the gloss and pattern match across the build.

Availability and support

All Bestem R1M side panels are stocked in the Atlanta, GA warehouse and shipped daily, worldwide. Live phone support is available every business day if you need to confirm fitment before ordering.