Generic M8 Rubber Grommets 10pcs — Steel-Lined Vibration-Damping Inserts for Motorcycle Fairings

Soft rubber grommet set with steel-lined center that cushions M8/5/16 bolts for motorcycle fairings, windshields, saddlebags and general mounting.

These TDZ grommets combine a pliable rubber outer sleeve with a corrosion-resistant steel lining to reduce vibration, protect painted panels, and provide a snug fit for 8mm (M8/5/16") fasteners. Sold as a 10-piece kit, each grommet is sized to fit common motorcycle and automotive mounting holes while keeping bolts centered and isolated from metal-to-metal contact.

How will these grommets reduce vibration and rattles?

The rubber body absorbs shocks and isolates the bolt from the panel, which cuts down on noise and movement during rides. The internal steel sleeve keeps the bolt from deforming the rubber while maintaining alignment for a secure mount.

• Rubber compound dampens vibration and reduces rattling.
• Steel liner prevents bolt wear and crush under torque.
• Precise thru-hole (≈0.330") fits 8mm/M8 and 5/16" bolts snugly.
• Soft height profile (≈0.42") maintains clearance without raising hardware.

Will these fit my motorcycle fairings or luggage brackets?

Yes — the overall diameter (~0.92") and thru-hole were chosen to suit most 8mm mounting holes used on fairings, windshields, and hard saddlebags. Their universal sizing and flexible rubber let them adapt to slightly oversized or imperfect holes while keeping the fastener centered.

• Designed for typical 8mm (M8) and 5/16" bolt installations.
• Overall diameter gives a stable bearing surface against panels.
• Low-profile height minimizes interference with trim and brackets.
• Works with metal or plastic panels where isolation is needed.

How durable are the materials and will they resist corrosion?

The grommets use wear-resistant rubber for flexibility and a plated steel sleeve to protect the bolt hole from abrasion. The combination extends service life compared with plain rubber or thin plastic inserts, and the steel liner reduces the chance of premature deformation.

• Soft, wear-resistant rubber resists tearing and compression set.
• Steel lining guards against bolt friction and groove wear.
• Suitable for outdoor vehicle use where movement and moisture occur.
• Not a permanent corrosion barrier—inspect and replace if heavily corroded.

How easy is installation and which fasteners should I use?

Installation is straightforward: push the grommet into the panel hole, align the steel sleeve, and insert an M8 or 5/16" bolt. The rubber compresses slightly to form a tight seal around the bolt, so standard hand tools and common torque levels are all you need.

• Push-fit into 8mm-sized holes; no special tools required.
• Use M8 or 5/16" bolts for correct fit and clamping force.
• Hand-tighten to align, then torque to manufacturer fastener specs.
• Check clearance for surrounding trim after installation.

Who is this for: Riders, mechanics and DIYers who need an affordable, universal vibration isolator for motorcycles, ATVs and light automotive projects. The TDZ 10-piece set is ideal when you want to replace worn grommets, retrofit vibration isolation, or add protective spacing for fairings, windshields, luggage racks and brackets without custom machining.