Luxilon
4G 125
Luxilon 4G 125 was developed as an evolution of ALU Power, addressing the primary complaints from professional players: stiffness and power loss. The 4G compound introduces a softer co-polymer formula that improves comfort and power at the cost of a small reduction in raw control. Tension maintenance is measurably better than ALU Power, preserving the string''s playability longer between restrings. Andy Murray used 4G throughout much of his peak career, and it remains popular among professionals who want Luxilon''s tour-proven durability with a slightly more forgiving response. For club players considering ALU Power, 4G is worth the comparison — many prefer its balance.
Ratings
Spin
Power
Comfort
Durability
Tension loss
Full specifications
Pros and cons
Pros
More comfortable and powerful than ALU Power
Better tension maintenance among Luxilon offerings
Used by Andy Murray throughout his career
Excellent for players who want ALU Power playability with more feel
Cons
Same premium price as ALU Power
Still stiff relative to multifilament options
Not suitable for arm-sensitive players
$20
Price per set
$180 per reel
Buy at Tennis Express →Quick specs