How to Adjust a Callaway Mavrik Driver: OptiFit Settings & Complete Loft Guide
The Callaway Mavrik driver uses an OptiFit hosel with eight settings to change loft by ±1° and add draw bias independently. The sole weight is fixed — no sliding track. This guide covers every setting, the adjustment procedure, what each change does to ball flight, and when to stop DIY and seek professional help.
Quick Settings Chart
On a standard 10.5° head, these settings produce the following effective lofts and face angles. The same pattern applies to 9° and 12° heads.
| Marking | Effective Loft | Face Angle | Bias |
|---|---|---|---|
| N (Neutral) | 10.5° | Square | Neutral |
| N+1 | 11.5° | Square | Neutral |
| N–1 | 9.5° | Square | Neutral |
| D (Draw) | 10.5° | Closed (2°) | Draw |
| D+1 | 11.5° | Closed (2°) | Draw + higher launch |
| D–1 | 9.5° | Closed (2°) | Draw + lower launch |
The OptiFit has eight total positions; the two additional settings are S and S+1 (neutral, same as N/N+1 but with a different adapter orientation for fine-tuning face angle). Most players will use the six above.
Each setting shifts loft relative to the head’s stamped loft (9°, 10.5°, or 12°). The Mavrik Max head already launches higher; the Sub Zero launches lower and spins less. The standard Mavrik sits in the middle.
Step-by-Step Adjustment
Step 1: Unlock the screw
Use the included T25 Torx bit (or a quality aftermarket T25). Turn counter-clockwise until the screw is loose enough to lift the head off the shaft. The screw stays captive in the hosel — do not fully remove it.
Step 2: Separate head and shaft
Gently pull the head straight off. The adapter remains on the shaft tip. If the head resists, wiggle it slightly while pulling; do not twist hard or you may damage the ferrule. A stuck head often means the screw was overtightened previously.
Step 3: Rotate the adapter
The adapter has two rings. The lower ring (closest to the ferrule) shows the setting. Align the desired marking (e.g., N+1) with the alignment indicator mark on the adapter’s edge. The adapter clicks into position when properly seated — you should feel a positive stop. If you do not feel a click, the adapter may not be fully rotated; remove and try again.
Step 4: Reassemble
Slide the head back onto the shaft. Ensure the adapter’s flat sides mate with the hosel’s internal flats. Push firmly. You should feel the head seat fully — no gap remains between the head and the adapter ferrule. If you see a gap, the adapter is not aligned correctly; remove and reposition. A visible gap means the head will not be stable at impact.
Step 5: Torque to spec
Tighten the screw to 40 in-lbs using a golf-specific torque wrench (many Callaway wrenches click at 40 in-lbs). Overtightening strips threads; undertightening risks head separation during the swing. If you hear a click from a torque wrench, stop immediately.
Step 6: Perform a safety check
Twist the head lightly. If it moves, the setting is wrong or the screw is loose. Recheck alignment and torque. Also inspect the adapter ferrule for any gap — if you see one, the head is not fully seated. A loose head can separate mid-swing, which is both dangerous and can damage the shaft.
Common Settings for Ball Flight
Draw bias
Use D, D+1, or D–1. D gives neutral loft with a closed face. D+1 adds more loft for higher launch with draw. D–1 lowers trajectory with draw bias. On the Mavrik Max, the D setting can exaggerate hooks because the head already carries draw weight through its internal weighting. Reserve D settings for consistent slices only — if you already hook the ball, D will make it worse.
Fade bias
Use N–1 or N. Decreasing loft opens the face slightly relative to the target line. N–1 lowers launch and helps promote a fade. Neutral face aids shot shaping control. If you need a stronger fade than N–1 delivers, consider the Sub Zero model rather than forcing the hosel. The OptiFit cannot create an open face beyond what N–1 provides.
Higher launch
Use N+1. This increases loft +1°. Works on any Mavrik model. Max heads already launch high; N+1 can produce ballooning for high-speed players (swing speeds above 105 mph) — test on course before making it permanent. If you get excessive spin with N+1, step back to N and check your attack angle instead of fighting the equipment.
Lower launch and less spin
Use N–1. This reduces loft. Best on Mavrik Sub Zero, but any model can lower flight this way. The fixed sole weight means no additional weight positioning is possible. Pair this setting with a lower-spin shaft if you need further spin reduction. If N–1 still launches too high, the head model itself may be mismatched — the Sub Zero is designed to spin 300–500 rpm less than the standard Mavrik.
Torque and Tools
Required torque: 40 in-lbs ( ≈ 3.3 ft-lbs).
Bit: T25 Torx (star bit). Callaway includes a compatible torque wrench with new drivers. If you lose it, buy a quality golf-specific torque wrench with a T25 bit. A generic T25 screwdriver will not deliver correct torque and risks damaging the screw head or stripping the threads inside the adapter.
Common mistake: Over-tightening with a non-torque tool. The screw is small — 40 in-lbs is a firm turn but not “crank it down.” If you hear a click from a torque wrench, stop immediately. If you feel the screw get suddenly harder to turn before clicking, you may be near the limit — back off and re-torque gently. Stripped adapter threads mean a full replacement (shaft + adapter), which costs more than a torque wrench.
When to stop and escalate: If the screw does not seat smoothly or the head still wobbles after two attempts at correct torque, do not force it. The adapter may be damaged (stripped threads or cracked ferrule) or the head’s internal taper might be dirty. Take it to a qualified clubmaker or call Callaway customer support — wrenching harder can damage the shaft or head. A broken screw extractor job on a driver head is expensive and not always successful.
Michael Reeves is a PGA Professional with over 20 years of experience in competitive golf and instruction. A former Division I collegiate player at the University of Texas, he competed on the mini-tours before transitioning to full-time coaching and golf journalism. He has been a certified PGA teaching professional since 2005 and has worked with players at every level, from absolute beginners to collegiate champions.
His writing has appeared in Golf Digest, Golf Magazine, and The Left Rough. At GolfHubz, Michael leads the editorial team, overseeing fact-checking and ensuring every answer meets the same standard he demands on the lesson tee: clear, evidence-based, and immediately useful.
When he’s not writing or teaching, Michael plays to a +1.4 handicap at his home club in Austin, Texas. He has attended over 40 major championships as a journalist and fan, and has played more than 200 courses across 15 countries.
You can reach Michael at [email protected] or follow his occasional swing analysis posts on the site.