What is the benefit of back-cutting the rim lip?

Back-cutting the rim lip reduces mass at the outer edges of the wheel. This decreases rotational inertia, allowing the wheel to change speed more readily, and also lowers unsprung weight for improved suspension response.

What does it mean for a wheel to be forged?

Forged wheels are made by forcing a solid block of aluminum into shape under extreme pressure. This process creates a denser, stronger, and lighter wheel compared to cast aluminum wheels.

What is the significance of reduced unsprung weight?

Reducing unsprung weight, which is the weight not supported by the suspension (like wheels, tires, and brakes), allows your suspension to react more quickly to bumps and imperfections in the road. This can lead to a more comfortable and controlled ride.

Performance Machine Assault Forged Wheel 21x3.5 Gold Ano 120

Name: Performance Machine 21 x 3.5 Forged Wheel Assault - Front - Gold Ano
Brand: Performance Machine
SKU: performance-machine-performance-machine-21-x-3-5-forged-wheel-assault-front-gold-t14-836097
Price: 1814.95 USD
Availability: BackOrder

Performance Machine 21 x 3.5 Forged Wheel Assault - Front - Gold Ano

$1814.95

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Performance Machine 21 x 3.5 Forged Wheel Assault - Front - Gold Ano. Lightweight agility and 11-spoke styling.

Key Features

Fits front wheel position.
Wheel measures 21 inches in diameter and 3.5 inches in width.
Constructed from forged aluminum for a strong yet lightweight build.
Features an 11-spoke design for a distinctive look.
Rim lip is back-cut to reduce mass at the outer edges, decreasing rotational inertia.
Equipped with PM's Raceline Series hubs, machined for weight reduction.

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Product Details

Performance Machine is well-known for their high-performance motorcycle components, and their Assault forged wheels are a prime example of that dedication to quality and performance. This 21 x 3.5 inch front wheel is crafted from forged aluminum, a material chosen for its exceptional strength-to-weight ratio. The Assault wheel is designed to reduce mass wherever possible, contributing to improved handling and a more responsive feel on your motorcycle.

The 11-spoke styling of the Assault wheel isn't just for looks; it's part of a design that prioritizes lightweight agility. You'll notice the rim lip is back-cut, a technique used to shave off weight from the outer edges. This not only decreases rotational inertia, meaning the wheel spins up and down in speed more easily, but also significantly reduces unsprung weight. Less unsprung weight means your suspension can react more quickly to road imperfections, leading to a smoother and more controlled ride. Furthermore, this wheel comes equipped with Performance Machine's Raceline Series hubs, which have also been meticulously machined to remove any excess material, further enhancing the overall weight reduction.

This wheel is finished in a striking Gold Anodized coating, offering both a unique look and a durable surface. While the manufacturer description notes ABS as a feature, its specific function in relation to this wheel is not detailed. For installation, it's always recommended to consult the manufacturer's specific guidelines to ensure proper fitment and safety.