Trimming Instructions

Important Notice

Nippon Shaft iron shafts are precisely engineered as constant weight products. This means that each shaft in a set is designed to deliver a consistent weight and performance flow from the longest iron to the shortest. Tip trimming these shafts is not recommended — any modification outside our official guidelines can negatively impact performance and durability.

Understanding Tip Sizes

Nippon Shaft iron shafts come in two main tip configurations:

  • .355” Taper Tip Shafts
    • These shafts have a constant outside diameter at the tip end (.355 inches).
    • They are designed to fit directly into club heads with .355” tapered hosels.
    • These shafts are butt trimmed only to achieve the correct playing length — no tip trim is needed.
  • .370” Parallel Tip Shafts
    • These shafts have a straight tip section of consistent diameter (.370 inches).
    • Parallel tip shafts are designed to be tip trimmed to adjust flex for different club numbers only if specified by the manufacturer’s instructions — however, Nippon Shaft iron shafts should not be tip trimmed to maintain the constant weight design.
    • These shafts are butt trimmed to final length.

✅ Tip: The tip size you order must match your iron head’s hosel specification. Installing the wrong tip size or modifying a shaft to fit a different hosel type can damage the shaft or the clubhead fit. If you are ever unsure on which tip size to order research the head model specs, consult a club fitter, or contact the OEM.

❌ Do not sand down a .370” parallel shaft to fit into a .355” tapered hosel. Doing so removes critical structural material and may cause shaft breakage — this will void your warranty.

MODUS³ Hybrid Shafts — Instructions

MODUS³ Hybrid shafts are an exception and do have specific tip trimming requirements:

  • #2 Hybrid or #2 Utility: No tip trim.
  • Each subsequent shorter club: Tip trim 0.5 inch for each club number down. For example:
    • #3 Hybrid = 0.5 inch tip trim
    • #4 Hybrid = 1.0 inch tip trim, and so on.

The MODUS³ Hybrid shafts are available in both .355” taper and .370” parallel tip versions. 

The MODUS³ Hybrid HL is only available in .370" parallel. 

✅ Tip: The tip size you order must match your hybrid/utility head’s hosel specification. Installing the wrong tip size or modifying a shaft to fit a different hosel type can damage the shaft or the clubhead fit. If you are ever unsure on which tip size to order research the head model specs, consult a club fitter, or contact the OEM.

❌ Do not sand down a .370” parallel shaft to fit into a .355” tapered hosel. Doing so removes critical structural material and may cause shaft breakage — this will void your warranty. This is considered a graphite product, so we can not cover warranty for re-installed shafts that have been exposed to heat during the shaft removal process.

Graphite Driver & Fairway Wood Shafts — Trimming Instructions

  • Nippon Shaft graphite driver shafts are shipped at 46.0 inches raw length.
  • For driver installation, no tip trim is required.
  • For fairway woods, tip trimming is permitted up to 2 inches maximum, depending on the desired club type and clubhead manufacturer’s specifications.

Always butt trim to your final playing length after the head is installed.

❌ Graphite shafts can not be reused because it is exposed to heat during the removal process. We will not cover warranty for re-installed shafts. 

Key Reminders

✔️ Always check your club head’s hosel size and choose the correct shaft model and tip configuration.
✔️ Follow all trimming and installation guidelines to maintain performance and warranty coverage.
✔️ Improper sanding, over-trimming, or using non-approved build methods may weaken your shaft and is not covered under warranty.

If you’re ever unsure, please consult your club builder or contact an authorized Nippon Shaft dealer for guidance.