How to Put Extensions in Golf Clubs

To put extensions in golf clubs, remove the grips, epoxy correctly fitted shaft extensions into the butt ends, let the epoxy cure, then trim the extensions and install new grips. The important decisions are how much length to add and which extension fits your shaft, not simply which one looks close. This guide covers steel and graphite shafts, the installation process, and the checks that help you avoid a loose extension or a poorly balanced club.

How Golf Club Extensions Work

A shaft extension adds length at the grip end of a golf club. Its narrower insertion section fits inside the existing shaft, while the exposed section becomes the new butt end beneath the grip. You do not need to remove the clubhead.

Extensions can lengthen irons, wedges, woods, and putters, provided the shaft is sound and the extension is compatible. They are useful for modest adjustments, but they are not a repair for a cracked shaft.

The right extension is a fit-and-balance decision, not just a way to add inches.

A longer club changes your setup, the club’s effective playing characteristics, and how heavy the head feels during the swing. More length can help a club fit, but it can also make centered contact harder if the original length was already appropriate.

Tools and Materials for Extending Golf Clubs

Have these ready before removing a grip:

Compatible shaft extensions: Sized for the shaft’s material and butt opening.
Golf shaft epoxy: A two-part adhesive intended for golf club assembly, with its mixing and curing instructions.
Measuring tools: A club-length ruler, calipers, and a marker.
Holding and grip-removal tools: A bench vise, a protective shaft clamp, and a hook-blade grip knife.
Preparation and cutting tools: Suitable abrasives, a material-appropriate saw or cutting wheel, and a deburring tool.
Regripping supplies: New grips, solvent-activated double-sided grip tape, compatible grip solvent, and a catch pan.
Cleanup and protection: Clean cloths, appropriate cleaning solvent, eye protection, and chemical-resistant gloves suitable for the adhesive and solvent.

Use ventilation when working with solvents and epoxy, and keep flammable grip solvent away from ignition sources. Cutting composite material also requires suitable dust protection and dust control.

If you want to preserve the existing grips, arrange professional grip removal rather than assuming a cut grip can be reused.

How to Install Golf Club Shaft Extensions

Choose the repair route before buying parts or cutting anything.

Your Club’s Condition	Best Starting Point
Sound steel shaft with a confirmed length target	A compatible steel-shaft extension
Sound graphite shaft with a confirmed length target	An extension specifically approved for that graphite-shaft application
Uncertain whether the club is too short	A fitting session before modification
Cracked butt section or a length target beyond the extension’s limits	A club-repair assessment and likely shaft replacement

Step 1: Choose the Added Length and Check the Balance Effect

Measure the club’s current playing length. Use a club-length ruler with the club positioned as the ruler requires. Record the current length and intended finished length for each club; keep the measuring method consistent throughout the job.
Confirm the length adjustment. Adding ½–1 inch is a common small adjustment, but a club fitting should establish the exact amount. An uncomfortable address position alone does not prove that the shaft needs lengthening.
Check the extension limit. About 2 inches is the maximum generally suggested for this type of modification, especially with graphite shafts. That is not permission to extend every shaft that far: a lower limit from the shaft or extension manufacturer takes precedence. For a larger change, replacement shafts are usually the better route.
Account for swing weight before modifying the set. As a rough club-building estimate, adding ½ inch increases swing weight by about 3 points. Swing weight describes balance and perceived head heaviness, not simply total club weight.

Extension design can change that estimate substantially. At 1 inch of added length, Billy Bob’s Steel Shaft Extension adds 3 swing-weight points, versus 6–7 points for a regular extension in the maker’s comparison. Its deeper insertion section places more weight inside the shaft to counterbalance the head.

Use the extension manufacturer’s swing-weight information when available, then measure the finished club. Grip weight and the rest of the club’s construction also affect the result.

Step 2: Remove the Grip and Inspect the Shaft Butt

Secure the club in a protective shaft clamp. Tighten the vise only enough to prevent movement. Do not clamp a bare shaft directly between metal jaws or crush a graphite shaft.
Cut away the old grip. Use a hook blade, work away from your body, and keep the blade from scoring the shaft. Graphite fibers are particularly vulnerable to knife damage.
Remove the old grip tape and residue. Use a shaft-compatible cleaning method, then expose the butt opening so you can measure and inspect it.
Check for damage and obstructions. Look for splits, crushed tubing, loose graphite fibers, corrosion damage, or components inside the butt. Stop if the shaft is damaged or an unidentified component prevents insertion. Do not drill into an obstruction to make room.

Record the original bare-shaft butt position or length. That reference helps you distinguish the length being added from the portion of the extension hidden inside the shaft.

Step 3: Select and Dry-Fit the Extension

Identify the shaft material. Choose an extension approved for that application rather than assuming steel and graphite extensions are interchangeable. Billy Bob’s Steel Shaft Extension fits most standard and ladies’ steel shafts, with a larger-diameter option intended for shafts categorized as alloy in its fit guidance. Identify an alloy shaft before selecting the size.
Measure the shaft butt with calipers. Check both the outside diameter and the inside opening, then match your measurements to the extension manufacturer’s sizing instructions. A shaft’s advertised butt diameter does not, by itself, tell you the size of the opening inside it. For Billy Bob’s Steel Shaft Extension, the available size choices are .580 inch (yellow), .600 inch (red), and .620 inch (green). These are that product’s size designations, not a universal chart for every brand or shaft.
Insert the extension without epoxy. It should reach its intended insertion depth with a close fit, without hammering, splitting the shaft, or wobbling excessively. If it has a seating shoulder, check that the shoulder seats correctly against the shaft butt.
Resolve a poor fit before proceeding. Do not wrap the insertion tip in grip tape or rely on a thick mass of epoxy to compensate for the wrong size. Obtain the correct extension or a manufacturer-approved fitting system.

The installed extension should also provide a reasonably smooth outside transition beneath the grip. An oversized shoulder or abrupt diameter change can leave a noticeable ridge.

Step 4: Prepare the Extension and Bonding Surfaces

Separate a double-ended extension if necessary. Billy Bob’s Steel Shaft Extension can be cut in half to provide 2 insertion tips for two clubs. Before cutting, confirm that each resulting piece will retain enough usable length for its intended club.
Preserve the insertion section. Do not shorten the bonding tip merely to reach the desired finished club length. Final length is set by trimming the exposed butt end.
Prepare the bonding surfaces. Remove old adhesive and loose debris from the shaft opening. Lightly abrade the extension’s bonding section as its instructions require. Prepare the shaft interior only with a shaft-appropriate method; do not enlarge the opening or grind away graphite fibers to force a fit.
Clean and dry both surfaces. Use a cleaning solvent compatible with the shaft, extension, and epoxy. Let it evaporate completely, then avoid touching the prepared surfaces with your fingers.

Dry-fit once more after preparation. Confirm that the extension still seats fully and mark its intended insertion depth if there is no obvious shoulder.

Step 5: Epoxy the Extension Into the Shaft

Measure and mix the epoxy correctly. Use the resin-to-hardener ratio specified for your chosen golf shaft epoxy. Do not assume every two-part adhesive uses equal quantities.
Coat both bonding surfaces. Spread a continuous film around the extension’s insertion section and the corresponding inside surface of the shaft. The goal is complete contact across the bonding area, not a blob at the tip.
Insert and seat the extension. Slide it in with a gentle turning motion to distribute the adhesive. Seat it to the shoulder or marked insertion depth without forcing it.
Check alignment and clean up. The extension should continue straight along the shaft rather than lean to one side. Wipe away squeezed-out epoxy before it hardens, taking care not to pull the extension back out.

Support the club so the extension cannot slide or shift while the adhesive cures.

Step 6: Let the Epoxy Cure Before Cutting

Allow 12–24 hours for typical golf shaft epoxy to cure before trimming and regripping. Confirm the exact full-cure time and required conditions in the epoxy manufacturer’s instructions; a product requiring longer must receive that longer cure.
Do not twist the extension or clamp across the fresh joint.
Check the cured joint. The extension should remain fully seated and straight, with no movement under gentle hand pressure. If it moves, stop and have the bond corrected rather than hiding it beneath a grip.

Step 7: Trim the Extension to Final Length

Recheck the target playing length. Position the club on the length ruler consistently and mark the cut on the extension.
Account for the grip cap. Finished playing length includes the grip’s butt cap, so do not cut the bare shaft to the intended finished measurement without allowing for it. If the replacement grip has the same cap thickness as the original, adding the desired length to the original bare-shaft butt is a useful reference. The section inserted inside the shaft does not count toward that increase.
Cut with a tool suited to the extension material. Use a suitable metal-cutting blade for a steel extension and an appropriate composite-cutting blade or abrasive wheel for a graphite or composite extension. Support the work securely without loading the bonded joint sideways. Do not use a tubing cutter on graphite.
Finish the cut end. Remove sharp edges and cutting debris without damaging the shaft or extension. The new butt should be smooth enough that it will not tear the grip during installation.

Measure again before applying grip tape. It is easier to correct an overly long cut now than after the grip is installed.

Step 8: Install the Grip and Finish the Club

Apply fresh grip tape. Cover the intended grip area with double-sided grip tape, keeping the surface smooth and folding the excess over the open butt end.
Lubricate the tape and grip. Wet the tape and the inside of the new grip with compatible grip solvent over a catch pan.
Slide the grip fully into place. Seat its cap against the shaft butt, align the grip with the clubface, and remove any unwanted twisting before the solvent begins to dry.
Allow the grip to dry. Use the grip-solvent manufacturer’s drying time before swinging the club.
Inspect the completed club. Confirm the finished playing length, grip alignment, and secure fit. There should be no grip rotation, movement at the extension, or clicking from the butt section.

Begin with controlled practice swings before hitting full shots. Stop immediately if anything shifts or feels loose.

Special Cases for Irons, Drivers, and Putters

Extensions require different length, compatibility, balance, and fitting considerations for irons, graphite-shafted woods and drivers, and putters.

Extending a Set of Irons

Record a finished-length target for each iron rather than making every club the same length. A conventional set uses length differences as part of its progression.

Lengthening can also change how the sole meets the turf during your swing. Check impact and turf interaction before deciding whether bending is necessary.

Extending Graphite-Shafted Woods and Drivers

Graphite shafts can have different wall thicknesses even when their outside butt diameters match. The extension needs compatibility with the actual opening and shaft construction, not just a nominal butt-size label.

Longer woods can become harder to control despite feeling more powerful. If the proposed change is substantial, or the shaft maker does not approve the extension application, have a club builder assess replacement-shaft options instead.

Extending Putters and Counterbalanced Clubs

A putter may contain a butt weight, grip-mounted weight, or tracking component. Identify these parts before ordering an extension because they can occupy the space needed for insertion or change the intended balance.

Substantial putter-length conversions deserve a fitting rather than simply a longer extension. The grip, head weight, balance, and setup all contribute to whether the finished putter works well.

How to Check the Finished Clubs

A secure installation is only part of a successful adjustment. At the practice area, check whether the added length actually improves the club’s fit.

Use this short checklist:

Setup: Can you address the ball comfortably without reaching or crowding it?
Contact: Are strikes centered rather than consistently moving toward the heel or toe?
Turf interaction: For irons and wedges, does the sole move through the turf cleanly?
Balance: Can you feel and control the head without changing your normal tempo?
Consistency: Is the result repeatable across several swings rather than one good shot?

A club fitter can check dynamic lie if the club feels awkward or produces a persistent contact pattern. Adding counterweight or changing grips blindly can mask one problem while creating another.

During later grip replacements, inspect the extension joint instead of automatically covering it with new tape. Cracking or unexplained clicking deserves attention before the club returns to play.

For a set-lengthening project, finish and test a representative club first. Once its fit and balance are right, use that result to finalize the rest of the set.

Frequently Asked Questions

How Long Should Golf Clubs Be for My Height?

There is no reliable height-only formula for choosing added club length. Wrist-to-floor measurement, posture, arm length, and impact pattern help determine whether a golfer needs longer clubs. Use a fitting to establish the target rather than assuming that being taller automatically requires an extension.

Should I Buy Clubs With Additional Length or Extend My Current Set?

Extending your current set makes sense when the heads and shafts already suit you and only a modest length adjustment is needed. Clubs built to an overlength specification can use longer shafts and component choices intended to manage balance. They are worth considering when you also need a different shaft, a major length change, or broader fitting adjustments.

What Is the 24/38 Rule in Golf?

For deciding how much length to add, a club fitting is more useful than the loft-and-length thresholds associated with the 24/38 rule. It is a club-selection guideline, not an official equipment rule or a formula for sizing extensions. Modern club design and your own strike consistency matter more than treating those thresholds as absolute limits.

Can golf club length be increased?

Yes, you can increase club length by fitting an extension at the butt end instead of replacing the entire shaft. Extensions can be used with steel and graphite shafts when the extension matches the application. Keep the adjustment limited, since about 2 inches is the generally suggested maximum, especially for graphite.

Does adding 1 inch to a golf club make a difference?

Yes, adding 1 inch can materially change a club’s swing weight. A regular 1-inch extension is reported to add 6 to 7 swing-weight points, while one deeper-inserting steel extension reports a 3-point increase at the same added length. Its lower change is attributed to extra insertion depth that counterbalances the club.