Wilwood Engineering specializes in high-quality
disc brakes for Harley-Davidson, the premier American motorcycle brand with a
long and illustrious history.
Starting with a small 7.07ci engine, founders William Harley and
Arthur Davidson began development of the motorized bicycle in Milwaukee,
Wisconsin, in 1901. They immediately recognized the need for more power and
built a larger, 24.76ci engine, installing it on a bike with a stronger frame.
In 1904 the bike was entered in a motorcycle race in Milwaukee, placing fourth
Harley-Davidson began producing motorcycles, making small
engineering changes with each version that led to faster, more comfortable
bikes. In 1911 the engine was changed to a V-Twin; the basic engine design still
in use today that gives the Harley its unique sound.
In 1993 Wilwood Engineering began development
of a brake system for the inaugural debut of Harley-Davidson’s race program.
Wilwood created the GP 900 caliper for Harley’s VR1000 AMA Superbike, as well
as a long list of motorcycle products including, brake systems with polished
stainless steel rotors, sprocket brake assemblies and a wide variety of high
performance, billet aluminum calipers.
Wilwood’s GP310 Front
Caliper, part number 120-7737, is direct leg-mounted and available for all single and dual
disc models. Right or left-handed models can be ordered chrome plated, or in a polished
or black finish. Additional colors are available upon request. The GP300 Rear
Caliper, part number 120-4244, is also available in right or left-handed models. These
calipers feature bleed screws and hardware, plus an exclusive anti-rattle pad
clip for quiet operation. The brakes also feature low dust, low noise brake
pads that are designed to operate in the widest range of temperatures and
environments utilizing Wilwood’s industry leading, stainless steel rotor
GP 310 front and GP 300 rear calipers are offered in versions
that fit all ‘84-‘99 models, as well as 2000 and newer models. Wilwood also
offers rear caliper bracket assemblies for both the Dyna and Softail models and
manufacturers a wide variety of stylish and lightweight rotor assemblies. The GP Series
Stainless Steel Rotors
are available for the front and rear for both the ‘84-‘99 and 2000 and newer Harley
Davidson models. The rotors are available in a black or satin finish or a
mirror polished finish and can be used as a single brake on the right or left,
or in dual application for improved brake response.
Wilwood also offers a unique Rear Sprocket
Brake Kit, part number 10178 that uses the sprocket
as the rotor. The system is available in either 48 or 51 tooth sprockets and
the bolt circle is consistent on all models: 5 x 3.25-inches. The sprocket is
available in a right or left-handed application and is used with the GP 310 style
caliper available in a polished, black and chrome-plated finish.
Wilwood also offers a front Stealth
Braking System, part number 140-10107-P, for motorcycles that works with 21-inch diameter wheels. The
rotor fits on the outside edge of the rim and the calipers are located on the
inside of the 41mm fork.
Wilwood’s brake components will dramatically increase your motorcycle’s
braking ability and improve your Harley’s appearance. If you have any questions
about our motorcycle components contact a Wilwood representative at (805)
388-1188 or email Sales/Tech Support.
You can also view and print our Catalogs.