Srixon Q-Star Ultispeed (2025) Ball Lab: The $30 Ball That Earned A Quality Award

Compression is a measure of how much force is required to deform a golf ball. The higher the number, the firmer the ball. Consistency matters because a ball that compresses differently from shot to shot produces different results from shot to shot. Ball Lab measures every ball individually and tracks both the average and the spread across the sample.

The 2025 Srixon Q-Star Ultispeed averaged 86, in the firm range of our database. Compression consistency graded at A- with a delta of 6.0 points and a spread running from 83.3 to 89.3, ranking in the top quartile of balls tested and well below the field average delta of 9.5 points.

Compression symmetry graded at B- with a median of 1.6 points against a field average of 1.9. Individual ball uniformity is solid although it’s the one compression metric that trails the rest of the profile.

All three boxes came from the same Srixon facility in Japan and the compression chart reflects that. There is no meaningful spread between boxes, just a consistent result across all 36 balls.

The charts below detail the compression measurements in our sample.

Weight consistency is another metric Ball Lab tracks. Even small differences across a dozen balls can translate to inconsistent ball flight. Ball Lab weighs every ball to four decimal places.

The 2025 Srixon Q-Star Ultispeed averaged 1.6026 ounces across 36 balls, in the light range of the database. Every ball cleared the USGA maximum of 1.6205 ounces with a range running from 1.6003 to 1.6057 and a standard deviation of 0.0014. It’s one of the tighter weight spreads in the sample. Weight consistency grades out at B+.

The charts below detail the weight measurements in our sample.

A ball that isn’t uniform in shape can move offline on the putting green or produce inconsistent flight in the air. Ball Lab measures each ball across multiple axes to get a true picture of its shape.

The 2025 Srixon Q-Star Ultispeed averaged 1.6824 inches with a roundness deviation of 0.0005 inches. Every ball cleared the USGA minimum of 1.680 inches. The pole-versus-seam data shows no consistent shape bias: 23 of 36 balls fell within gauge noise and no lot-wide pattern was identified. Box 2 was the least consistent of the three boxes while Box 3 ran the tightest.

Diameter consistency graded out at B.

The charts below detail the diameter measurements in our sample.

In the 2026 MyGolfSpy Golf Ball Test, the Srixon Q-Star Ultispeed made its mark in the iron categories at high swing speed. It produced plenty of ball speed off the 7-iron, finishing inside the top seven fastest irons in the field. In total distance off the iron, it finished just behind the top three, trailing only the TaylorMade Tour Response, Callaway Supersoft and Callaway Chrome Soft.

Around the green the story changes. The Q-Star Ultispeed ranked third-lowest in greenside spin at 35 yards, ahead of only the Titleist Velocity and Callaway Supersoft, and third-highest in launch angle in that same test. It’s a ball that gets up fast and doesn’t bite. That lines up with the distance-focused design intent but is worth knowing if short game spin matters to your game.

The ball test data and Ball Lab results tell a consistent story: the Q-Star Ultispeed is a well-made distance ball that earns its price tag on the manufacturing side and delivers on the speed side off the irons.