IRD Bottom Bracket Conversion Cups Pair

Article number: P-51519
Availability: In stock

Made in Japan.

Conversion cups for IRD Quad or Defiant bottom brackets.

French, Swiss, Italian, or 73mm OS* English BB threading. (If you require a 68mm English cup set, order the 73mm and pry out the spacers inside the cups.)

*Some mountain bikes have "oversized" bottom brackets shell width of 73 mm, rather than the standard 68 mm.


NOTE: Please purchase the IRD QB55 or QB75 as well as the cups needed in order to guarantee compatibility. The QB55 and QB75 come with BSA english cups as default.

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