Robart Gear & Accessories are designed and built by Aircraft Weight. Using a smaller diameter Strut or Wire Kit that is rated for your plane will likely fail, will void the warranty and will most likely damage both your plane and your retracts. If you are looking for replacement parts for someone else's gear, please keep in mind. Robart Gear & Accessories are designed to work with Robart Gear & Accessories. We have the highest tolerances in the industry and we DO NOT test our items to be compatible with other manufacturers, outside of our OEM items. Thank you.