Project X 5.5 Review - Specs, Flex, Weight - The Ultimate Golfing Resource

Project X 5.5 Review – Specs, Flex, Weight

If you are serious about golf, then you are serious about squeezing the best performance out of your clubs.

This will surely entail scrutinizing the shafts you use on all of your clubs. Your shaft will dictate how much distance you get from every club, how much control you have, what the launch is like and how they feel.

So it’s crucially important that you choose a shaft that is right for your tempo and swing speed. A fitting is always the best way to determine which shaft you should use for each of your clubs. However, it never hurts to go into a fitting with a bit of knowledge in your back pocket.

To that end, we continue our series of shaft testing and reviews with the Project X 5.5. The Project X 5.5 is a staple on the PGA Tour and you have likely seen some of your buddies game it in your Sunday foursome. But is it the right choice for you? Let’s talk about it.

Project X 5.5 Overview

The Project X 5.5 is a steel shaft that is most commonly used with irons.

It comes in a full array of flexes; but instead of designating the different flexes with letters (R, S, X etc.), Project X opted for a numbering system.

The line ranges in flexes from 5.0 to 7.0 – 5.0 being the softest flex and 7.0 being the stiffest. The line increases in stiffness in increments of .5. So the Project X 5.5 comes in as the second softest flex shaft in the series.

You can liken the Project X 5.5 to a regular flex steel shaft. The Project X 5.5 is available with a taper tip or a parallel tip. For this test, we used the taper tipped version. It should also be noted that 5.0 and 7.0 flex is not available with parallel tips.

Why is Project X So Popular?

Probably because it is a high profile shaft.

It has been proven a winner on the biggest stages in golf so everyone knows that it can help the best players in the world perform at the highest level.

When we tested the Project X 5.5 for ourselves we were very impressed with the control that the extra-long taper rates produced. We can see why this is such a popular choice for irons. They offer a nice progressive kick point for irons that better players will really appreciate.

How Does the Project X 5.5 Shaft Perform?

The performance of the Project X 5.5 is marked by low trajectory and low spin rates.

If you have an aggressive transition, you will like the feel of this shaft. It’s actually pretty lightweight compared to steel shafts from other major manufacturers; but it still offers a good deal of control and feel.

The Project X 5.5 keeps backspin really low which is nice if you are trying to gain more distance from your woods and long irons. While this may be a problem in the short irons, better players will be able to compensate for the lack of greenside spin.

Project X 5.5 Shaft Specs Table

Specs	Project X 5.5
Weight	115 grams
Tip	.355” (tapered tip), .370” (parallel tip)
Butt	.600”
Available Flexes	5.5 (regular)
Length	41” – 37” (taper tip), 41” (parallel tip)

What Flexes Are Available? What Swing Speed Do They Suit?

The Project X 5.5 shaft specifically is a regular flex shaft.

The other Project X options include 5.0, 6.0, 6.5 and 7.0. We would recommend the Project X 5.5 for players with swing speeds in the range of 85 to 92 MPH.

What Weights Are Available? What Swing Speeds Do They Suit?

The entire Project X line ranges in weight from 110 grams to 130 grams.

The Project X 5.5 in particular weighs 115 grams whether you choose a parallel or taper tip. This is a good weight if you are struggling to get into fast swing speed territory. It will help you get your club head speed up in your irons and woods.

Why is it So Good?

For us, the best thing about the Project X 5.5 shaft was the low spin combined with the short game control you get from the taper tip.

In fact, we would only recommend the Project X 5.5 if you are going to opt for the taper tip. Why? Because the longer taper tip design allows for a seamless transition of energy. Less explosiveness from your swing is lost thanks to the taper design. The result is a low launch and more distance.

Project X 5.5 First Impressions

At first, we thought the Project X 5.5 felt a little stout. However, when we paired them with our irons, they let up a bit as we worked down the set.

Key Features & Performance

The most important feature is easily the tapered tip. The tapered area runs longer for enhanced energy transfer from your swing to the ball.

Project X 5.5 Wedges Review

A great choice for wedges because the Project X 5.5 will afford you more accuracy where you need it the most: around the green.

Project X 5.5 Irons Review

We would recommend fitting all of your irons with the Project X 5.5 shaft. The progressive kick point will appeal to better players who will feel the load shift throughout the set.