LighTech Rear Wheel Nut Yamaha YZF-R1/M (2007-2026) D003 - Ergal 7075 Aluminium

When the integrity of your rear axle nut is non-negotiable, the LighTech D003 rear wheel nut delivers the engineering rigour your Yamaha YZF-R1 or YZF-R1M deserves. Machined from aerospace-grade Ergal 7075 aluminium — a material trusted in aviation for its exceptional strength-to-weight ratio — this nut is built to maintain a secure, precise fitment through repeated track sessions and daily road use alike.

Key Features

• Ergal 7075 aluminium construction: aerospace-derived alloy combining extreme structural integrity with a significant weight reduction over steel equivalents
• CNC-precision machined for an exact, rattle-free fit on the rear axle of the YZF-R1/M — no shimming, no compromise
• Hard anodised finish: provides robust corrosion resistance and a clean racing aesthetic that holds up under heat and road exposure
• Rated to a maximum tightening torque of 140 Nm, meeting the demands of both road and race environments
• Available in five anodised colours with individual part number references for accurate reordering
• Suits both road and track use — a direct upgrade over the OEM nut without any modification required

Engineering & Build Quality

The D003 is not a cosmetic accessory — it is a safety-critical fastener engineered to the same standards LighTech apply to their competition components. The M24x1.5 thread pitch is machined to tight tolerances, ensuring consistent clamp load every time the nut is torqued to the specified 140 Nm. With a diameter of 39 mm, a height of 17.5 mm and a hex drive diameter of 30 mm, the geometry is compatible with standard race tooling, making wheel changes at the paddock straightforward and consistent.

The hard anodising applied to each colour variant is not purely visual. It adds a surface hardness layer that protects the aluminium from fretting, corrosion and the thermal cycling inherent to track use. Each nut leaves the LighTech facility individually inspected, reflecting the brand's motorsport heritage.

Road & Track Performance

On the road, the D003 replaces a heavy OEM steel nut with an Ergal piece that trims unsprung rotating mass at the rear wheel — a tangible benefit that compounds with every other weight-saving modification on the bike. On circuit, consistent torque retention under the thermal and mechanical loads of repeated hard braking and acceleration is precisely where the Ergal 7075 alloy earns its place. Riders competing in club or national-level events who strip and rebuild wheels regularly will appreciate the thread quality and the colour-coded identification that makes part tracking straightforward.

Colour Options & Part Numbers

• Black — D003NER
• Gold — D003ORO
• Red — D003ROS
• Silver — D003SIL
• Cobalt — D003COB

Fitment & Compatibility

• Yamaha YZF-R1 (2007–2026)
• Yamaha YZF-R1M (2015–2026)

Specifications