| Product | Quality | Price Range | Notes | | :--- | :--- | :--- | :--- | | | Excellent (Japanese) | $80 - $110 | Direct fit. Uses OEM-spec bearing sizes. Best budget option. | | Hot Rods (8144) | Very Good (US/Taiwan) | $120 - $150 | Forged steel. Slightly lighter than OEM. Requires careful balancing. | | Wossner (Germany) | Premium | $160 - $200 | Made for racing. Includes a high-performance small end bushing. | | NOS 5BS 661 | Holy Grail | $250 - $400 | Only buy with original packaging. Risk of age-related corrosion. |
The two-stroke community is resilient. As of 2025, small batch manufacturers are beginning to reverse-engineer NOS Yamaha rods using 3D scanning and billet steel. However, for the purist, nothing replaces the factory . yamaha 5bs 661
Unless this is a typo for a known audio receiver (like the Yamaha CA-661 ) or a marine part, the is almost certainly a genuine OEM component for a late-70s 125cc enduro or motocross bike . | Product | Quality | Price Range |
One of its greatest strengths is its simplicity. Since it has no water pump/impeller | | Hot Rods (8144) | Very Good
Here’s everything you need to know about the 5BS-661 identifier.