Restore correct handling and period look with this WM3 x 18 rear rim for late Triumph and BSA twins using the conical rear hub. Manufactured to original 2.15″ x 18″ WM3 dimensions with 40 spoke holes, it is a direct replacement for OEM part number 37-3784 (also referenced as W3784).
Designed for 1970s British twins, this rim provides the proper profile, spoke angle, and drilling to lace cleanly to the stock conical rear hub, giving a straight-running, durable wheel assembly when built with quality spokes. It’s ideal for accurate restorations, rider rebuilds, or replacing a rusty, dented, or pitted original rim while maintaining the correct factory appearance.
Key Features
- WM3 x 18 (2.15″ x 18″) rear rim for conical hub
- 40-hole drilling for standard conical rear hub pattern
- Direct replacement for OEM 37-3784 / W3784
- Correct profile and spoke angles for proper wheel building
- Suitable for Triumph and BSA twins fitted with the late conical rear hub (early–mid 1970s)
Typical Applications
- Triumph 650 / 750 twins with rear conical hub (e.g., TR6, T120, T140 and related models)
- BSA twins and singles using the 18″ WM3 conical rear rim (e.g., A65/A70 and similar applications)
Use this rim when you want correct fit, authentic look, and reliable performance from your rebuilt rear wheel.
The product images shown are for illustrative purposes only and may not be an exact representation of the product received. Manufacturers occasionally make minor cosmetic changes to items, such as color, finish, label, or design. These changes do not impact the item’s function or compatibility. Please contact us if you have specific concerns regarding appearance.
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