Callaway RAZR X Muscleback Irons Specifications
Full factory loft, lie and length chart for the Callaway RAZR X Muscleback irons, 2011–2014.
- Years produced
- 2011–2014
- Category
- Blade / Muscleback
- Construction
- forged
- Material
- forged 1020 carbon steel
- Set makeup
- 2–PW
Data confidence: medium. These figures are compiled from secondary sources rather than a manufacturer spec sheet. If you have an original catalogue page, send it over and we will update the chart.
Loft, lie & length chart
| Club | Loft (°) | Lie (°) | Length (in) | Bounce |
|---|---|---|---|---|
| 2 | 18 | 59.5 | 39.5 | 2 |
| 3 | 21 | 60 | 39 | 3 |
| 4 | 24 | 60.5 | 38.5 | 4 |
| 5 | 27 | 61 | 38 | 5 |
| 6 | 31 | 61.5 | 37.5 | 6 |
| 7 | 35 | 62 | 37 | 7 |
| 8 | 39 | 62.5 | 36.5 | 8 |
| 9 | 43 | 63 | 36 | 9 |
| PW | 47 | 63.5 | 35.5 | 11 |
Lofts and lies are the factory standard build. Individual clubs may differ if they have been bent, re-shafted or re-gripped during their life.
About the Callaway RAZR X Muscleback
The RAZR X Muscleback is the tour blade of the RAZR era, designed by Roger Cleveland with tour input and forged from 1020 carbon steel with a white chrome finish, a thin topline, narrow sole and minimal offset. It reached golfers in mid-2011 through specialist shops, though it is commonly catalogued as a 2012 model because the wide release came later. Lofts are traditional — a 35 degree 7-iron and 47 degree pitching wedge — on lies several degrees flatter than the cast RAZR X, and the catalogued range ran 2-iron to pitching wedge with 3-PW the usual set.
Stock shafts
- FST KBS Tour — steel
Related models
- Forged players cavity of the same line: Callaway RAZR X Forged
- Cast better-player model of the same line: Callaway RAZR X Tour
- Standard game-improvement model: Callaway RAZR X
- Compare: Callaway RAZR X Muscleback vs Callaway RAZR X Tour
- Compare: Callaway RAZR X Muscleback vs Callaway RAZR X
Frequently asked questions
What is the loft of a Callaway RAZR X Muscleback 7-iron?
The Callaway RAZR X Muscleback 7-iron has a loft of 35 degrees, a lie of 62 degrees and a standard length of 37 inches.
Are Callaway RAZR X Muscleback irons forged?
Yes. They are forged from 1020 carbon steel with a white chrome finish, designed by Roger Cleveland for highly skilled players.
When were Callaway RAZR X Muscleback irons released?
They first reached golfers in mid-2011, though many retailers catalogue them as a 2012 model because the wide release came later.
Finding a used set
The Callaway RAZR X Muscleback ran from 2011 to 2014 and is no longer in production, so the used market is the only source. Search eBay, 2nd Swing, Golf Avenue and the PGA Tour Superstore trade-in listings, and check the loft and lie against the chart above before buying — sets this age have often been bent from standard.
- Callaway Demandware ProductSpecs feed (ProductSpecs-Get), the manufacturer-authored source behind the View Specs panel on callawaygolfpreowned.com, product code irons-razr-x-muscleback — loft, lie and bounce for the 2-iron through pitching wedge
- golfclubspec.com RAZR X Muscleback table and intheholegolf.com product specification table — both agree cell for cell with the Callaway feed on loft, lie and bounce
- Lengths were not published in any Callaway source located. They are recorded from a GolfWRX Club Techs thread on RAZR X Muscleback club lengths quoting the factory standard (PW 35.5 inches, half-inch increments up the set), which matches the ladder Callaway published for the contemporaneous RAZR X Tour exactly, so the column is recorded at medium confidence rather than omitted
- 2ndswing.com listing — stock shaft FST KBS Tour steel, 3-PW retail set makeup
- year_introduced is 2011: fairwaygolfusa.com blog offered the model in March 2011 and an owner blog documented a delivered set in July 2011, though many databases list it as a 2012 model because wide U.S. availability came later — noted here rather than silently resolved. year_discontinued is 2014, the year Callaway announced the Apex Muscleback (15 August 2014), its next tour blade
- Swing weight and offset were not published in the sources located, so those columns are omitted rather than estimated
Last reviewed 2026-07-29. Spot an error? [email protected]