The unique high-rake, progressive pitch configuration is designed to help most boats achieve their best overall performance at all throttle levels... low end, mid-range and top end. Manufactured using a durable 15-5 ph one piece stainless steel casting, then polished to a gleaming mirror-like finish. They are backed by a limited lifetime blade failure warranty. Your prop is one of the essential links between your boat and the water. Carefully choose the prop that will best suit your application. Mercury/Mariner/Force O/B:
In-line 4 & 6 cylinder, 71.1 C.I.D. (1165cc) 3 cylinder, Magnum II, III & XR-4, XR-6, Force '95 & later, 90 hp, 120 hp outboards. For the props above with the first digits of "ST113" use Quicksilver #13191A1 thrust washer (Overton's part #24221).Important:
These recommendations are for single engine installations only. For most twin engine installations, it is necessary to increase the pitch by 4". Warning:
Due to the performance enhancing nature of the design, Quicksilver Trim Tab #. 46399A1 or AP 4004 (Overton's part #38459) MUST
be used to avoid damage and/or injury. Exception:
With Mariner Magnum II and Mercury XR-4 outboards, use Quicksilver Anode Plate # 15300 or equivalent. Note:
1997 and newer Mercury/Mariner O/B with 150hp plus or any Mercruiser I/O will need an aft washer (Overton's part #23395) for proper installation.