Flow Design adjustable rear spat winglets will bolt directly onto their Mustang S550 FM rear spats thanks to the pre-pressed in threaded brass fittings on the rear spats.itting kit is provided to ensure perfect fitment and can be adjusted to your liking. Adjustments can be made anywhere between 5mm-20mm on each side increasing the overall width up to 40mm!
- Mustang S550 FM adjustable rear winglets (pair)
- 2 Flow Designs sticker
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