Nike SQ Sumo2 5900 Fairway Wood

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Max Game Improvement Fairway Wood

The Nike SQ Sumo2 5900 is the club your playing partners heard before they saw. Nike took the square-head concept it introduced with the original Sumo2 and pushed it right up against the USGA's moment of inertia limit of 5,900 g-cm², which is where the name comes from. In 2007 that number was the whole sales pitch. This was, by the rulebook's own measure, about as twist-resistant as a driver was legally allowed to be.

The tradeoffs were real and Nike never hid them. The square geometry looked strange at address, and the impact sound was a loud metallic clank that became the club's calling card, for better or worse. Plenty of golfers couldn't get past either one. But the ones who could found something genuinely useful: heel and toe strikes that stayed in play instead of diving into the trees.

Almost two decades later, the Sumo2 5900 holds up as an honest max game improvement driver. Modern heads have caught up on forgiveness while sounding better and looking normal, so nobody's arguing this belongs in your bag over a new release. As a budget-friendly used pickup for a golfer who fights a two-way miss, though, it still does exactly what it was built to do.

• Higher handicappers who miss all over the face and want the club to bail them out on heel and toe strikes.
• Slicers and hookers whose big miss comes from the face twisting open or shut at impact, since the extreme MOI resists exactly that.
• Bargain hunters building a bag on the used market who care more about playable drives than modern looks or sound.

Frequently Asked Questions

Why is the Nike SQ Sumo2 5900 so loud?

The thin titanium face and hollow square body act like a bell at impact, producing a sharp metallic clank instead of the muted crack of a traditional driver. Nike accepted the sound as the price of pushing MOI to the limit. Some golfers grew to like it, and there's no way to quiet it down.

What does the 5900 in the name mean?

It refers to the head's moment of inertia, roughly 5,900 g-cm², which was the maximum the USGA allowed. Higher MOI means the head resists twisting when you hit the ball off-center, so mishits lose less distance and fly straighter.

Is the SQ Sumo2 5900 still worth buying used?

As a cheap forgiveness play, yes. It typically sells for well under a hundred dollars and the anti-twist design still works. Just know that a used driver from any brand's last few model years will beat it on ball speed, sound, and looks, so it makes sense mainly on a tight budget.

Can you adjust the loft on the SQ Sumo2 5900?

No. This driver predates the adjustable-hosel era for Nike, so loft, lie, and face angle are all fixed. You need to buy the loft that fits your swing from the start, which for most slower-swinging players means erring higher.

Is the square head legal for tournament play?

Yes. The Sumo2 5900 was designed to sit exactly at the USGA and R&A limits for both MOI and head size without exceeding them, and it remains on the conforming list. You can play it in any club event or handicap round.

Alternatives to the Nike SQ Sumo2 5900

Other max game improvement fairway wood models from different brands, closest to its model year.