Maple Wheels put a Shark Wheel on a fingerboard: what the spec sheet says, and what it doesn't

70D. Fingerboard wheel hardness is usually quoted on the A scale, and the listing gives this one on D. Shore D is a harder scale than Shore A, so 70D is not a soft wheel by any reading — but Maple Wheels hasn't published what compound that corresponds to or how it compares to the rest of its range. Don't mentally file it next to a 70A wheel. If hardness is the deciding factor for you, ask the brand before you buy.

"Bearings locked." The listing says the Abec 9 bearings are locked and says nothing else about it. I'm not going to invent a meaning for that phrase. It's the one line on the page I'd want clarified in writing before spending, because it's the difference between a serviceable wheel and a sealed unit.

The shape itself is described on the listing as a hybrid of a sphere and a cube, which in practice means a wavy contact edge rather than a flat band of urethane. What that does on a park surface, on a ledge, or coming out of a transition is not something a spec sheet can answer, and nobody has published measurements of contact patch or roll speed against a conventional round wheel.

Nothing I can attribute. I have the product page and the stock history, and that's it — no r/Fingerboards thread, no Discord messages, no shop feedback in the material in front of me. A sold-out-then-restocked listing tells you people bought them; it tells you nothing about whether anyone kept them on their trucks.

So treat this section as a gap rather than a verdict. If you want real-world reports before committing, the honest move is to wait for riders to post clips on a surface you recognize — a park with coping you know, or a table — and see whether the wavy profile does anything odd on landings and manuals.

If you're after a wheel that will measurably improve how your setup rolls, there is no evidence on this page that this is it, and I'm not going to manufacture any. Every performance claim available is about the full-size Shark Wheel, phrased by its makers, and a 8.7 mm fingerboard wheel is not the same object.

If you're after the most interesting piece of urethane on a shop shelf this month — a genuinely unusual geometry, in black, from a brand that has been pouring wheels since 2018 — then it's a clear buy, with the caveat that you're funding your own experiment. At 37.95 it's not an impulse add-on, and the restock history suggests it won't sit around waiting for you to decide.

My own position: worth it if the shape is the point. Not worth it if you're hoping it solves something your current wheels don't.

Where to buy

The set is listed on Skull Fingerboards as the Maple Wheels Optic Black Shark Wheel, one variant, Default Title. Stock shown as available at the time of writing after the 11 October restock.