User Guide

ManualsBrandsExedy ManualsAutomotiveEXEDY HF02 Chromoly Racing Flywheel

EXEDY Globalparts Corporation • 800.346.6091 • www.exedyusa.com

Function of Various Sports/Performance Products

Flywheels

Lightweight One Piece Chromoly

EXEDY ywheels combine low weight, low inertia and

high thermal capacity. They are designed for lightly tuned

racing cars for drag racing, autocross and rally events, as

well as street usage. They are made from solid one-piece

billet chromoly steel or chromoly steel forgings. They are

specically designed to reduce weight and inertia for better

engine response. Most incorporate special design features to

enhance the airow which improves the cooling of the clutch.

The ring gear teeth are integrated onto the ywheel unlike an

aluminum ywheel where the ring gear is pressed onto the ywheel

and has the possibility of separating from the ywheel due to the dierent

expansion coecients of aluminum versus steel. EXEDY steel billet and forged steel ywheels have

passed engineering tests to 15,000-18,000 rpm. They are guaranteed not to fail to the said rpm, and

are all SFI approved.

Stage 2 — Cerametallic Friction Disc

EXEDY cerametallic clutches are designed to handle the abuse of high power modied engines.

Our cerametallic friction material can handle much more abuse than stock type disc assemblies

without slipping and fading.

All EXEDY Stage 2 cerametallic clutch discs have sprung center dampers to reduce the impact and

shock loads transmitted through the drivetrain. We oer two types of cerametallic discs, “thick”

and “thin.”

Stage 1 — Organic Friction Disc

Ultra Fiber Disc

This advanced facing material provides the high heat

resistance essential for motorsports. It was developed

by reviewing both the copper wire ratio and the

composition of the high strength ber. The

Ultra Fiber Disc maintains the superior half-

engagement feeling specic to the Organic

material. With improved high heat resistance,

it provides the functionality essential for street

performance and mild racing applications.

Organic Disc

Newly developed asbestos free friction facing

is used, which has high heat resistance and high

burst strength characteristics. No steel back is

required which can cause high RPM “lock-out” and/

or synchro damage. Superior in shift operations and

half-engagement feel, this clutch disc is recommended for

any sports/performance use.

Clutch Cover

These clutch covers are designed to achieve a clamping load that is approximately 40% higher than

the genuine part allowing a higher torque transmitting capacity. Ductile material is used for all

pressure plates and, high burst strength can be achieved in all temperature ranges.

Thick Disc

The “thick” discs have better heat

capacity and therefore better durability

in demanding applications. Even with

the “thick” disc, our three and four puck

designs typically have less inertia than a

stock disc and work well for street, rally and

track use.

Thin Disc

The “thin” discs oer greatly reduced

inertia to improve shift eort, allow

for quicker shifting, and improve

synchro durability. These discs are

approximately 1/2 the thickness of a

stock disc and are recommended for

circuit track use only.