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AMS Hi-Performance Ported Cylinder Heads for TWIN CAM engines.
AMS heads are thoroughly cleaned and inspected, then machined to exacting specs. We form the valve seats with a state-of-the-art Newen CNC Contour machine, to our unique multi-angle shape. Combined with our specially machined valves, the multi-angled seats perform with maximum efficiency and reliability. Heads are 5-AXIS CNC on a Centroid CNC Machining Center and /or custom hand ported, and flow tested to enhance both torque and power in the valve lift and rpm ranges most suited for use with the best performing street cams. We also coat the exhaust ports with a ceramic-metallic thermal barrier to reduce both head and oil temps, as well as enhance the exhaust gas flow velocity. Finally, heads are decked /surfaced, CC'd, and assembled with hi-temp resistant Viton stem seals, valve seating pressure is tested, and valve closure/sealing is vacuum tested. We strive to deliver the highest quality heads in the industry - and back them up with our "No Hassle 12 month Warranty". Sold as a set, starting as low as $750 exchange; or if you prefer to keep your bike's original heads, we can perform our "magic" on them for the same pricing.
For more info on Ported Cyl Head options, call us at 817-335-9331 or Email us
AMS Hi-Performance 96", 105" and 107" Big Bore Piston and Cylinder Kits.
The 96" kits fit 1999-2006 TWIN CAM engines with stock 4" strokes.
The 105" kits fit 2007 and later engines, as well as older engines with a 4-3/8" stroke.
The 107" kits fit 2007 and later engines.
Our big bore cylinders are bored and honed using JIMS torque plates to ensure a "round" bore. Unlike many shops that simply hone them out, our cylinders are precision bored using either a Kwik-Way air-centered boring machine or our new 5 axis CNC milling machine. We take the time to bore them in three stages to reduce both heat and micro-fracturing of the metal. The cylinders are then honed, using a three stage process to reduce heat and produce round, precisely dimensioned bore. We also put a plateau honed finish on them to help reduce break-in time. Each cylinder is bored to match the piston to be used, giving our Big Bores a custom fit for maximum performance. Our Big Bore Kits use "high quality, precision made" KB Pistons and Hastings piston rings or specially designed, lightweight, offset pin Forged pistons. KB's hypereutectic alloy is stronger and lighter than the factory's cast aluminum pistons, reflects heat much better - keeping the heat energy in the combustion chamber where it can be used for power instead of raising the engine oil temp. And the Forged 2618 alloy pistons provide much needed strength for the longer stroke models, with reduced piston slap for a quieter and longer lasting engine. Being lighter means they can rev higher and accelerate faster, with less stress on the crank and rods than stock pistons. The AMS Big Bore Kit comes complete with two cylinders, two custom matched pistons with rings, precision hardened wrist pins and lock clips.
Throw in our 12 month no hassle warranty and excellent customer service and you get a whole bunch of Bang for your Buck!
(96BB) Big Bore Piston and Cylinder Kit $589 Exchange
(105BB) Big Bore Piston and Cylinder Kit $589 Exch.
(107BB) Big Bore Piston and Cylinder Kit $689 Exch.
Click here for installation instructions
For more info, please call us at 817-335-9331 or Email us
Cams and Gasket kits
We also offer Cometic and CYCO Gaskets, K&N filters, D&D EXHAUST Systems, AMS-HYLIFT Lifters and Adjustable Pushrods, ANDREWS Cams, AV&V VALVES and Guides, S&S cams, gears, and other brand name parts for your Harley-Davidson at discount prices.
Please call us at 817-335-9331 or Email us for a quote before you make your next parts purchase - we will try to meet or beat the competition's prices.
Replace your worn TourPack docking bushings with AMS Stainless Steel Docking Bushings
AMS Stainless Steel replacement docking bushings last much longer, ride much more securely and quietly than the plastic lined HD bushings or soft aluminum replacements. Made from Stainless Steel, these bushings let your TourPak or back rest dock securely, without rattling and shifting in place.
Call 817-335-9331 and order yours today!
Front Bushing with narrow groove p/n BR549 only $39 pair.
Rear Bushing with wide groove p/n BR509 only $49 pair.
Other Sized bushings and custom-made bushings available at similar pricing. Call 817-335-9331 for more info.
Tombstone Tail Lamp Mount for Harley Springer
AMS now makes a billet 6061 aluminum tail lamp mount to replace the weaker original plastic mount found on many 97-03 Softails. The plastic mounts, which crack / break quite often, are not sold separately; so one must buy an expensive tail lamp assembly every time the plastic mount breaks. Some owners report they are on their 2nd & 3rd lamp within two years time. Worse yet, should the plastic mount fail completely, your entire tail lamp assembly will be left dangling by the wiring! The AMS billet mount eliminates that worry, as well as the aggravation and expense of replacing a broken plastic mount every 6-12 months.
AMS-GM1 Aluminum Billet Mount vs. HD Cracked Plastic Mount
AMS-GM1 mount shown with lamp installed.
AMS-GM1 shown installed in HD Tombstone Housing.
AMS-GM1 billet 6061 Aluminum Tombstone Tail Lamp Mount
Only $199.95
NOTE - The pics presented were taken with the prototype piece. Production pieces will appear slightly different, as they were modified to make installation even easier.
APPLICABLE YEAR/MODEL
1997-1999 Evo
2000-2003 TwinCam
TEXT 817-335-9331 and order yours today!
This is not an official Harley-Davidson® site. This website is not endorsed or sponsored by Harley-Davidson®.
AMS-MotoMachine & Supply and Automotive Machine & Supply, Inc. is not affiliated with Harley-Davidson®. Any use of the word Harley-Davidson®, Harley, HD, or other words/numbers registered by Harley-Davison® are soley for reference. Prices subject to change without notice. Please call for current quote.
