1.6 HOTEC (High Output Torque - Endurance Capability)
2.2 MSR (MicroSizer Replacement)
2.4 V SPEC (Variable power - High and low end power)
2.6 GP (Great Performer)
2.8 ummnn
1.6 ENDURO
2.2 OEM
2.4 POWERBAND
2.6 PERFORMER
2.8 TOPEND
Or you can just name em all spec names..
depending on the motor, you can use a letter for it's application
E-SPEC
M-SPEC
V-SPEC
G-SPEC.. i dunno bout this one.. hehehe