Reading a Compound Code: What EP70, NBR70 and CI60 Tell You
The codes marked on our YAMAHA parts are a compact statement of family and hardness. Here is how to read one.
Where the codes come from
Seven parts in the YAMAHA group carry a compound code on the part itself: EP40, EP60, EP70, EP80, NBR70 and CI60. It is not a Lee World invention — it is the customer's own material designation, moulded or printed so that the grade travels with the part.
The letters
EP is the EPDM family, used where the part is exposed to weather and ozone. NBR is the nitrile family, used where the part sees fuel or oil mist. CI is a separate designation on the customer's system and is quoted as written rather than translated.
The number
The two digits are the nominal Shore A hardness. EP40 is a soft grade; you find it on the handlebar grip, which has to deform under the hand. EP80 is stiff; it goes on a duct that has to hold its shape. EP60 and EP70 sit in between and cover most covers, straps and boots.
Why it matters when you reorder
Two parts can share a shape and differ only in grade. If you are reordering from a sample rather than a drawing, photograph the marking — it is the fastest way to be certain you get the same part back.
Read next
Sport Pad or Rubber Pad? The Difference That Decides Your…
A sport pad has a metal face; a rubber pad does not. That single difference drives tooling count, unit price and how the part is validated.
Choosing a Pedal Pad Compound: EPDM, SBR, TPE and When Each…
Service conditions, not price, should pick the compound. Here is how we narrow it down and what we test to prove the choice.
Overmoulding vs Press Fit: Two Ways to Get Rubber Onto a…
Both produce a metal-faced pedal pad. They differ in tooling, in retention and in how easily the part can be pulled apart.
Still deciding?
Send the service conditions and the annual volume. Our designers will propose a compound and a construction rather than asking you to pick one.