Callaway RAZR X vs Callaway RAZR X Muscleback

Side-by-side factory specifications. Differing values are highlighted.

Callaway RAZR X2011–present · Game Improvement Ironscast with an undercut cavity and variable face thickness · cast stainless steel Callaway RAZR X Muscleback2011–2014 · Blade / Musclebackforged · forged 1020 carbon steel

Specification comparison

Club	RAZR X loft	RAZR X Muscleback loft	RAZR X lie	RAZR X Muscleback lie	RAZR X length	RAZR X Muscleback length
2	—	18	—	59.5	—	39.5
3	19	21	60.5	60	38.75	39
4	22	24	61	60.5	38.25	38.5
5	25	27	61.5	61	37.75	38
6	28	31	62	61.5	37.25	37.5
7	32	35	62.5	62	36.75	37
8	36	39	63	62.5	36.25	36.5
9	40	43	64	63	35.75	36
PW	44	47	65	63.5	35.25	35.5
AW	49	—	65	—	35.25	—
SW	54	—	65	—	35	—
LW	59	—	65	—	34.75	—

Highlighted cells differ between the two sets. Lofts and lies are factory standard.

Which should you choose?

The RAZR X Muscleback is the weaker-lofted set — up to 3° weaker than the RAZR X. That trades raw distance for a steeper landing angle and more predictable stopping power into greens.

Both charts are reproduced in full on their own pages: Callaway RAZR X specs and Callaway RAZR X Muscleback specs.