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SL Shaft Lab Golf Est. 2012 · Boise, ID
Boise, Idaho · Est. 2012

Every Club Starts With the Shaft, Not the Sticker

Most shops fit you to a head and hope the stock shaft goes along with it. We run the opposite direction: your swing's spine alignment, frequency, and kick point are measured and matched on the deflection board first, then we build the rest of the club around that decision.

Swing Signature Readout On the Board
Grip End
Spine Mark
Kick Point
Tip Section
Shaft Frequency258 CPM
Tip Deflection2.4″
Spine Consistency98%
Tempo Ratio3.1 : 1
The Shaft Lab Difference

The Shaft Does Most of the Work

Two identical clubheads with different shafts can produce noticeably different launch, spin, and dispersion — yet most fitting conversations still start and end with the head. We built our studio around the deflection board specifically so shaft behavior can be measured on its own terms, separate from whatever head happens to be bolted onto it that day.

Once we know how a shaft actually loads and releases against your motion, choosing the right head, length, and lie becomes a much smaller decision.

Walk Through Our Process
What the Board Measures
Spine Location (FLO)
Static Frequency (CPM)
Tip & Butt Deflection
Torque Under Load
On the Wall

Every Major Shaft & Head Line, Side by Side

We're not tied to a single OEM's production quota, so head and shaft pairings are built from your board results — not whichever combination happens to sell the fastest.

TMTaylorMadeDrivers & Fairway Woods
TTTitleistIrons & Wedges
PXPXGFull Bag Builds
SCScotty CameronPutter Fitting

See the full lineup →

The Fitting Menu

Six Benches, One Shared Standard

Every category below runs through the same deflection-board-first process — only the variables measured change from club to club.

01

Driver Fitting

Shaft weight and kick point matched to your tempo ratio first, then loft and head design tuned for carry and dispersion.

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02

Fairway Wood Fitting

Confidence off the turf comes from a shaft that loads consistently through impact, not just a forgiving head shape.

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03

Hybrid Fitting

Closes the long-iron gap with a shaft profile that bridges your iron and wood sets instead of fighting either one.

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04

Iron Fitting

Frequency-matched across the full set so every club feels like a natural step from the one before it.

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05

Wedge Fitting

Bounce and grind selected against your actual turf interaction, with shaft weight tuned for touch around the green.

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06

Putter Fitting

Length, lie, and face balance checked against a dedicated stroke-path capture rig on the putting bench.

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9,000+Swings Logged
40+Shaft Lines Stocked
14 YrsIn Business
97%Spine-Match Accuracy
How a Session Runs

From First Swing to Signed Build Ticket

1

Swing Signature Capture

A short set of practice swings with your own clubs establishes your tempo ratio and load timing — no equipment changes yet.

2

Deflection Board Testing

Candidate shafts are tested against your signature on the board, narrowing the field before a single ball is struck.

3

On-Range Verification

Shortlisted shaft-and-head combinations are hit live with a tracking unit to confirm carry, dispersion, and strike pattern.

4

Build & Bench Sign-Off

Clubs are assembled in-house, checked against frequency and swingweight targets, and signed off on a build ticket you keep.

From the Bench

What Golfers Notice After a Fitting

★★★★★

I'd never had a shaft tested apart from a head before. Once they found my spine mark, the driver felt like it was releasing on time for the first time in years.

GH
Grace HollowayDriver Fitting
★★★★★

My old irons were three different shaft weights without me knowing it. The frequency-matched set feels identical from the 4-iron down to the gap wedge now.

MD
Marcus DelaneyIron Fitting
★★★★★

Full bag rebuild that actually explained why my wedges never matched my irons. Worth the longer session just for the build ticket alone.

PA
Priya AnandFull Bag Assessment

Read more client results →

See Your Swing Signature First-Hand

Bench sessions run 60–90 minutes and include a written build spec. Every session fee is credited toward any club built in our shop.