Universal Parts Secondary Spring Seat $2.49 Quantity discounts available QuantityPrice SKU: 151-145 This item is IN STOCKCurrent Stock: 13 Quantity -+ Add to Cart Details Specs Height 28.5 mmOuter diameter 60 mmInner diameter 43 mm Supported Models Baja SC50, Kymco, Panterra, QMB139 50cc/49cc , Roketa, Schwinn, SUNL, Tank, Various unlisted makes/models DetailsSpecsSupported Models Back Universal Parts Secondary Spring Seat for 50cc 4-stroke QMB139 engines. Back Height 28.5 mmOuter diameter 60 mmInner diameter 43 mm Back Baja SC50, Kymco, Panterra, QMB139 50cc/49cc , Roketa, Schwinn, SUNL, Tank, Various unlisted makes/models