How to Hybrid ReString Slap and Sync

A ReString Slap and ReString Sync hybrid setup gives you the ability to fine-tune your racket's response in ways a single string setup cannot.

By placing one string in the mains and a different string in the crosses, you combine two distinct sets of characteristics into one stringbed.

Your mains (vertical) strings shape about 70% of your stringbed's character, while the crosses (horizontal) contribute about 30%. That split matters when choosing which string goes where.

ReString Slap is a hexagonal co-polyester built off Zero's DNA, offering aggressive spin and power with a more controlled, plush feel at contact.

ReString Sync is a round co-polyester designed for precision, feel, and directional control.

Both strings feature ReString's Signature Snapback coating, which reduces friction between the mains and crosses for consistent string movement.

This shared coating is a big reason why the two play so well together in a hybrid setup.

This article covers the two options you have with these strings, Slap mains with Sync crosses, and Sync mains with Slap crosses, to help you choose the right one for your game.

Slap in the Mains, Sync in the Crosses

This is our primary recommended hybrid of these two strings.

Slap mains deliver hexagonal bite and strong spin generation with a slightly more controlled response than Zero. Shaped strings like Slap belong in the mains because the mains are what generate spin when you lift the ball.

Imagine that when you brush up on a groundstroke or kick serve, the vertical strings are the ones doing the work. Putting your most spin-friendly string in that position is the logical choice.

Sync crosses bring smooth round-string interaction, enhanced feel, pocketing, and directional precision. The round profile slides cleanly against Slap's shaped mains, and the Signature Snapback coating on both strings keeps that movement consistent over time.

The result of this setup is a stringbed that gives you aggressive spin and power from the mains with the added control and touch that Sync is known for in the crosses

Consider stringing Sync crosses 2-3 lbs lower in tension than Slap in the mains to generate even more snapback and spin from this setup.

Aesthetically, the black and gray color combination looks great in the frame too!

Sync in the Mains, Slap in the Crosses

This reverse setup is technically possible because both strings carry the Signature Snapback coating, which keeps string-to-string friction low even with a shaped cross string.

The setup provides a feel-oriented stringbed where precision and control drive the experience.

Sync mains provide clean ball contact and excellent directional control, while Slap crosses add a touch of bite and firmness to the overall response.

However, compared to Slap in the mains and Sync in the crosses, you will lose the spin advantage of having a shaped string in the mains.

This configuration is best suited for players who prioritize Sync's control-first response and want a touch more bite from the crosses without switching to a full bed of shaped polyester.

How Slap and Sync Compares to a Zero and Sync Hybrid

An interesting question many players have asked us is how a Slap mains, Sync crosses hybrid stacks up against our most popular Zero mains, Sync crosses hybrid.

Both setups use Sync in the crosses for snapback and feel, so the difference comes entirely from how Slap and Zero compare in the mains.

Zero and Sync is the more lively, power-oriented option. Zero's explosive response paired with Sync's control creates a hybrid that maximizes spin and pace.

Slap and Sync trends more toward the control side while still offering spin and explosiveness.

Because Slap is built off Zero's formula but dials back some of that raw power in exchange for precision, the hybrid maintains an aggressive character without losing control.

Slap and Sync is ideal for players who want a hybrid setup but find Zero and Sync too powerful.

Conclusion

Hybrid stringing is about customization and trial and error to find what works for your game.

Start with Slap mains, Sync crosses if you want more spin and bite from your setup.

Consider Sync mains, Slap crosses if you are committed to a more controlled stringbed.

Experiment with both strings individually to understand their personalities, then select which combination suits you best.

Our Half Set Custom Box provides enough string for eight rackets, making it easy to test different hybrid combinations.

About the Author: Juan is the co-founder of ReString. He was born in Argentina, raised in Japan, and moved to the US to pursue college tennis. He now plays as an ATP & WTA hitting partner.