Yamaha Raptor 660 Wheel Bolt Pattern Guide
Direct answer and model scope
The Yamaha Raptor 660, produced for the 2001 through 2005 model years, uses a four-lug wheel bolt pattern. The bolt circle is 4x115 mm, with the front and rear hubs sharing the same pattern. This means there are four wheel studs or bolt holes arranged on a 115-millimeter diameter circle. The specification applies to the standard Raptor 660 and does not automatically transfer to the later Raptor 700, which uses a different hub.
What the numbers mean
In a bolt pattern written as 4x115, the first number is the lug count. The second number is the pitch circle diameter, measured in millimeters across the center of the hub through the centers of opposite bolt holes. On a four-lug hub, it is the direct distance between the centers of two bolt holes that are diagonally across from each other, not the distance between adjacent holes.
The Raptor 660 has four evenly spaced lugs. Because it uses an even number of lugs, the 115 mm dimension can be checked with a ruler or caliper from the center of one stud to the center of the stud directly opposite it.
Compatibility considerations
A wheel with the same 4x115 bolt pattern is not automatically a direct fit. The center bore of the wheel must clear the Raptor 660 hub, and the lug nut seat style, typically tapered, must match the wheel. Wheel offset also affects steering, fender clearance and suspension behavior. Aftermarket wheels marketed for the 2001-2005 Raptor 660 generally list the offset and hub bore together with the bolt pattern.
Model years and variants
The 4x115 mm pattern covers all standard Raptor 660 production years from 2001 through 2005. If a wheel is listed only for a Raptor 700, it should not be assumed to fit the 660 because the 700-family hubs can differ. Conversely, some aftermarket brands may offer wheels with multiple patterns or hub adapters, but the native Raptor 660 hub uses the 4x115 specification.
How to verify before buying wheels
Measure the diagonal distance between opposite stud centers; it should be about 115 mm. Confirm the replacement wheel is listed for 4x115 and for the 2001-2005 Raptor 660. Check the wheel offset and center bore against the stock hubs. Use the correct lug nuts; a mismatched seat type can loosen or damage the wheel.
What to watch for with used or mixed wheels
Used wheels may have worn lug holes, damaged seats, or bends that are not visible when the wheel is off the machine. Compare the bolt circle on both the wheel and the hub before mounting. A wheel that appears to line up can still have an incorrect center bore or insufficient thread engagement if the lug nuts are not the correct type for the wheel.
Evidence gaps
Published service data and aftermarket fitment references consistently identify the 2001-2005 Raptor 660 hub as a four-lug design. The exact center bore and stock offset are not stated here because they can vary between wheel brands and are better confirmed against the specific replacement wheel or measured directly from the original hub.