B543-2RS MAX Bearing 39.7*50.8*7.14 mm 1PC For Cannondale Lefty Full Balls Bicycle Headset B543 397508 2RS Ball Bearings

Product Overview

Premium B543-2RS MAX full ball headset bearing, specially engineered for Cannondale Lefty single-sided suspension fork bikes. With precise standard dimensions of 39.7*50.8*7.14mm, it perfectly replaces original worn-out headset bearings, solving steering jitter, noise, stuck and loose rotation problems. Adopting dual 2RS rubber sealed design and full ball structure, this bearing features low friction, high load-bearing and excellent durability, delivering smooth and stable riding control for mountain bikes and gravel bikes equipped with Lefty forks.

DETAILS

Item: B543-2RS MAX For Cannondale Lefty
Closures: RS Sealed
Structure: MAX, Full Balls, NO Retainer.
Dimensions: 39.7 x 50.8 x 7.14 mm
ID (inner diameter): 39.7 mm
OD (outer diameter): 50.8 mm
Width: 7.14 mm
Quantity: 1 Lot = 1 PC

Superior Product Features

1. Full Ball High-Precision Structure
Different from semi-ball bearings, the full ball configuration maximizes the number of steel balls inside the bearing, effectively improving radial and axial load capacity. It perfectly adapts to the special stress characteristics of Cannondale Lefty unilateral forks, avoiding bearing deformation and failure caused by uneven force during off-road riding.
2. 2RS Double Waterproof & Dustproof Sealing
Equipped with high-density rubber sealing rings on both sides, it tightly isolates external dust, mud, rain and sand. Effectively prevents internal steel balls and raceways from rusting and abrasion, greatly extending the service life, suitable for complex riding environments such as mountain cross-country, gravel roads and daily commuting.
3. High-Strength Wear-Resistant Material
Made of high-quality bearing steel with fine polishing treatment on inner and outer raceways and steel balls. It features low rolling friction, sensitive rotation, no stagnation, and high wear resistance. It maintains stable steering performance for a long time and reduces frequent maintenance costs.