STELVIA X-SP
67.3-gram machined polycarbonate yo-yo
STELVIA X-SP is a 67.3-gram machined polycarbonate yo-yo by LUFTVERK, designed by Jeffrey Pang and released in June 2024. "X-SP" comes from its internal codename, "Extreme Stability Plastic." It measures 59.0 mm in diameter and 48.0 mm wide, and comes unresponsive with a C-size bearing and 19 mm slim response pads.
The design builds on the «Fulvia» series. The stated goal was a plastic yo-yo with the rotational inertia Pang expected from a 6061 aluminum yo-yo, so the design drops edge reliefs and the Fulvia's "Concave Meniscus" detail, and the hub gives up nearly 2 grams per half to the rim. It was developed at the same time as STELVIA XP589, a 64.3-gram titanium model with the same diameter, width and profile. It shares the 59.0 mm diameter of Plastic Fulvia and is 2.0 mm wider. The colorways were inspired by home goods Pang saw while living in Japan.
We ship worldwide from Sweden with both traceable and non-traceable options based on destination.
Packages shipped to the US have import duties and tariffs pre-paid by us, nothing to pay on delivery.


Technical specifications
Appearance
- Body Material
- Polycarbonate
- Weight
- 67.3 g
- Diameter
- 59.0 mm
- Width
- 48.0 mm
- Shape
- W-shape
Maintenance
- Bearing Seat
- Size C
- Response Type
- 19mm Response Pad
- Axle
- M4 x 10mm
Production
- Produced By
- LUFTVERK
- Designed In
- Canada
- Release Date
- 2024
Packaging
- Package Contents
- 1 × STELVIA X-SP yo-yo
- Packaging Type
- Cardboard box




