Description Replacement stock cylinder kit for QMB139 scooters. Blue Line Complete Cylinder Kit (39mm); QMB139 Cylinder Kits Other products by BLUE LINE SKU1100-1501 - + Retail Price: $41.00 Your Price: $41.00 In Stock Add to cart Add to wishlist Have a Question about this item? Click here to email us. Also in Category Prima Traveler Saddle Bag (Black); Universal Price: $235.00 QTY: Add To Cart Prima Roll Bag - Large Black Price: $219.00 View Details Prima Rear Basket (Large, w/ Removable Liner); Universal Price: $172.00 QTY: Add To Cart