Bullpadel Hack 04 26

Paquito Navarro's racket for 2026 is a 365 to 375 g diamond with a high balance, and not a single independent reviewer has played it yet. That matters. Everything you read here comes from the published specs and from Bullpadel's own claims, not from a court test. The specs are clear enough to judge the idea, though. This is a power racket for professional-level players, and it makes no apology for that.

What the spec sheet says without a single review

Normally you can weigh several tests against each other. Here there are none. No written review, no video test, no player reports with substance. So you are buying on spec sheet and on the reputation of the Hack line.

That is not necessarily a problem. The specs line up tightly: diamond shape, high balance, heavy weight, stiff carbon face. Four separate facts, all pointing at the same style of play. When specs agree this much, the on-court character is rarely a surprise.

Diamond, heavy, head-heavy: built for the smash

The Hack 04 26 weighs between 365 and 375 g. That is heavy. Combined with the high balance, most of that weight sits towards the head. On an overhead, that mass works for you. The racket head keeps its speed through the ball and your smash carries more.

You pay for that elsewhere. Quick defensive reactions ask you to move a heavy, head-heavy racket fast. The same goes for low balls at the back glass and fast counter-volleys. The spec profile rates maneuverability low, and the physics explain why. Not unplayable, but demanding.

A retailer also lists a Custom Weight system on this racket. What exactly you can adjust with it is not published, so treat it as a listed feature rather than a proven tuning option.

Tricarbon 18k and Multieva: a stiff face on a medium core

The face is Tricarbon 18k, a stiff carbon weave. Stiff faces return energy fast and reward clean, committed swings. They also transmit more vibration and punish off-centre hits. The 3D Grain surface adds texture to the face, which on paper helps with grip on the ball and spin.

Inside sits a Multieva core, Bullpadel's foam material. Bullpadel's product page describes the feel as intermediate to hard, and says the core adjusts its behaviour to the intensity of the hit. Treat both as brand claims, not measurements. Arm problems in your history? Then be careful with this profile. A stiff, heavy, head-heavy racket is exactly the combination that loads the arm. Retailers do list Ease Vibe and Vibradrive anti-vibration elements, which may take the edge off but do not change the character.

What Bullpadel claims, and what that is worth

Bullpadel's own ratings give the racket 3 for power, control, maneuverability and sweet spot, and 4 for stiffness, on a scale the brand does not state. Read that as: the brand itself calls this a stiff racket with average marks elsewhere. That is not quite the spec-based profile, which rates power high and control, comfort, maneuverability and sweet spot low.

The product page talks about dynamic power, converting your movement speed into more powerful shots. Treat that as a claim, not a measurement. What it translates to in practice is the standard high-balance story: the faster you swing, the more the racket gives back.

Hack 04 26 against the Hack 05 27

The successor is already published. The Bullpadel Hack 05 27 keeps the same core, shape, level, thickness and weight range. What changed on paper comes down to three labels. The face is now Carbon 18k instead of Tricarbon 18k. The surface reads 3D, Rough instead of 3D Grain. The balance label dropped the Medium mention. These are label-level differences, not measured changes. If you find the Hack 04 26 available, you are not buying a dated racket in any proven way.

Against its own predecessor the changes are equally modest. The Hack 04 2025 comparison shows the same core, shape, player and weights. The face was relabelled Tricarbon 18k. The balance label gained a Medium mention. A changed label is a changed label, not a new racket.

If you want the Hack idea with more control

Within the same 2026 family, the Bullpadel Hack 02 Advance goes the other way: round shape, low balance, softer Evalastic core. Its spec profile rates control high and power low. That is the defensive sibling.

Outside Bullpadel, the adidas Cross IT 3.4 and the Dunlop Aero-Star Pro sit in the same diamond, high-power, low-comfort territory. Neither solves the forgiveness problem, because they share the same recipe. If the Hack 04 26 sounds too demanding, the answer is a different category, not a different diamond.