Motorcycle Inner Tube Sizing and Cross Reference Guide

TR-87/C: Center Mounted 90 Degree Metal Stem
TR-6: Metal Valve Stem with Locking Nuts (Can be either center or size valve)
TR-15: Rubber Valve Stem, No Lock Nuts, Tapered Base (Can be either center or size valve)
TR-13: Center Mounted Rubber Valve Stem, No Lock Nuts, Non-Tapered
TR-4: Metal Valve Stem with Locking Nuts (Can be either center or size valve)
JS-244/A: Center Mounted 90 Degree Metal Stem

Motorcycle Inner Tube Sizing / Cross Reference Guide

** Use this chart to cross reference tube sizing.

Front Tires			Rear Tires
METRIC	ALPHA	INCH	METRIC	ALPHA	INCH
80/90	MH90	2.50/2.75	110/90	MP85	4.00/4.75
90/90	MJ90	2.75/3.00	120/90	MR90	4.50/4.75
100/90	MM90	3.25/3.50	130/80		5.00/5.10
120/80		4.25/4.50	140/80		5.50/6.00
120/90	MR90	4.25/4.50	140/90	MU90	5.50/6.00
130/90	MT90	5.00/5.10	150/80	MV85	6.00/6.25
**			150/90	MV85	6.00/6.25

TUBE VALVE STEM STYLES: TR-87/C: Center Mounted 90 Degree Metal Stem TR-6: Metal Valve Stem with Locking Nuts (Can be either center or size valve) TR-15: Rubber Valve Stem, No Lock Nuts, Tapered Base (Can be either center or size valve) TR-13: Center Mounted Rubber Valve Stem, No Lock Nuts, Non-Tapered TR-4: Metal Valve Stem with Locking Nuts (Can be either center or size valve) JS-244/A: Center Mounted 90 Degree Metal Stem

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