SKID.BIKE
SKID PATCH · CHAINLINE · 1 INCH THREADED · 144 BCD · NJS · 120 OLD · LOCKRING REVERSE THREAD · 1/8 CHAIN · QUILL STEM · SKID PATCH · CHAINLINE · 1 INCH THREADED · 144 BCD · NJS · 120 OLD · LOCKRING REVERSE THREAD · 1/8 CHAIN · QUILL STEM ·
FIXED GEAR / TRACK

DOES IT
FIT?

Will that part go on your track bike?

CHECK THE FIT →日本語
FIG. 01 — TRACK BIKETAP A PART
1/8 CHAINQUILL STEM1.37 COG144 BCD120 OLD

Track bikes run old standards and current ones side by side: 1 inch and 1-1/8, JIS and ISO, 1/8 and 3/32. This site holds the standards themselves as data and derives compatibility from them, instead of maintaining a table of every part against every other part.

When we have no record for a combination we return ❓ UNKNOWN. We do not guess and call it a yes.

TOOLS

01SKID PATCHHow many places your rear tyre touches down→02GEAR INCHESRatio, development, speed by cadence→03CHAINLINEFront against rear. Measured, never guessed→

LEARN

FLIP FLOP HUBFixed/fixed versus fixed/free, why the lockring thread runs backwards, and what changes when you flip.QUILL VS THREADLESSBoth are 25.4mm on a 1 inch fork. The diameter tells you nothing.