I have a Russell DayLong Solo with Sunbrella waterproof marine seat cover. It only has the standard duty spring not the HD one.
Prices | Custom Motorcycle Seats | Russell Cycle Products
The Russell DayLong Standard sprung one should be fine up to at least 265lb 120 Kg I would think.
The HD actually 230+lb (105Kg) spring is the minimum weight required to use it from their own website's info. For riders below 230lb the HD spring will not work as effectively.
S-3 Solo All Leather $710 + Heavy-Duty Suspension – Driver Seat 230lbs+ $45 = US$755 (Au$1,125).
The S-3 Solo I have here is a Standard spring Solo in Diamond quilted Sunbrella fabric.
New it would be US$585 (Au$875) PLUS freight.
Au$700 + postage here in Oz but likely not for US buyers as postage back would still be about Au$130 with insurance, even if it is only about half the freight cost from USA to Australia.
Sadly to get one to Oz from Russell in USA is well over a Au$1000 now due to freight and 10% GST & Au$150 customs admin fees on top for items valued (including postage costs


) over AU$1000.
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Another Fabric and pattern example photo only below.
- Sunbrella Acrylics: Sunbrella is a breathable, durable canvas product that has been used in outdoor marine and awning applications for years. It is naturally water resistant and will not fade. Sunbrella will hold you in the pocket and help eliminate slide forward problems. A wide range of colors are available for use.