Description
Bosch Aerotwin AR21U – wiper blade is 530 mm long and boasts a frameless design.
AR21U provides dependable, year-round windshield cleaning, effortlessly combating ice, snow, and rainstorms.
This Bosch AR21U model offers a symmetric-style spoiler, built to provide long-lasting performance in high-speed scenarios.
A symmetric spoiler spans the entire blade, delivering even pressure distribution. By directing air symmetrically above and below, it prevents skidding at all driving conditions. This construction also guards against debris buildup, extending blade life. Its versatile installation allows use on either side of the windshield, making it a practical choice for year-round drivers.
Frameless replacement blade offers a modern tensioned beam, precision-engineered to maintain even line pressure across complex windshield curves. A pre-curved spring-steel beam pairs with a premium silicone edge, producing a whisper-quiet glide. Its wind-cheating contour cuts lift at highway speed, while tool-free quick-click mount suits 95% of vehicles for rapid installation. The frameless build shrugs off snow and ice, eliminates corrosion points, and hugs modern glass shapes for superior visibility. Drawbacks: higher upfront cost, refill inserts are non-serviceable, plastic adapters may embrittle in severe cold, and clamping force declines slightly on very flat windshields. Rinse with pH-neutral soap every three months and replace every 12–24 months (6–12 months in extreme climates). Go beam, drive clear – order today.
Series Aerotwin – the flagship line from the trusted European group Bosch. Wiper blades in the Aerotwin family offer an advanced frameless construction and are supplied to the plants of numerous leading vehicle makers. The wiping element is made from a high-tech composite rubber, offering better performance than natural rubber. Spring elements are produced from a special “Evodium” spring steel and maintain their original tension throughout the blade’s service life.
