3SDM 1.25

3SDM 1.25 - Wide-Face Forged Monoblock with Deep Concave Potential

Maximum Concave in the 3SDM 1PC Forged Programme

The 3SDM 1.25 is a 1PC forged monoblock wheel built around a wide centre face and an aggressive concave depth profile. Within the 3SDM forged range it occupies the position of the most visually dramatic option — a wheel whose silhouette changes substantially as width increases, deepening in concave step with every added inch of rim width.

3SDM 1.25 Design Language: Bowl Face and Wide Spoke Footprint

The 1.25 runs a ten-spoke arrangement with a broad spoke root at the hub that tapers progressively toward the rim edge. The spoke surfaces carry a flat top plane with sharply undercut sides, creating a stepped shadow effect across the face. At wider widths the bowl geometry becomes the defining visual element, with the outer rim flange framing the concave depression as a structural feature rather than a cosmetic detail.

3SDM 1.25 Forged Construction: Structural Reserve for Wider Builds

Forged monoblock construction is the only process that reliably delivers the structural margin required when building wheels at the outer end of the width range. For a 1.25 specced at 10J or wider, the dense forged grain structure absorbs lateral loading that would stress-fracture a cast equivalent. The single-piece format also eliminates the geometric complications of multi-piece assembly when extreme concave is specified.

3SDM 1.25 Technical Specifications

Construction: Forged monoblock. Material: Forged aluminum alloy. Available in 15" to 20" diameters. Width range: 5J to 14.5J. Manufactured by 3SDM Wheels.

3SDM 1.25 Available Finishes

The 1.25 is available through the full 3SDM finishing programme. The white finish shown in product imagery is one of the lighter options in the range; the programme also covers Silver Shadow, Satin Black, Gunmetal Grey, and Imola Bronze among standard options, with custom colour and bespoke two-tone finishes available on request for any build.

3SDM 1.25 Vehicle Fitment: Wide-Body and High-Performance Applications

The 1.25 is specified most frequently on wide-body vehicles and high-output performance cars where concave depth and face drama are primary design goals. Its availability from 5J to 14.5J means it can be fitted to narrow standard arches as a show wheel or specced aggressively wide for dedicated track, stance, or wide-body builds where the full bowl geometry is fully visible.

Any Vehicle, Any Specification

The 3SDM 1.25 can be built to order for any vehicle and any specification — not just the models listed above. Diameter, width, offset, and centre bore are all determined at the point of manufacture. Contact us with your vehicle make, model, and year for a confirmed fitment specification and build quote.