Yonex BG 66 Ultimax Badminton String

The Yonex BG 66 Ultimax (BG66 Ultimax) is one of the most popular thin-gauge badminton strings in the world, built for players who want high repulsion, sharp control, and a crisp hitting sound. Its 0.65mm gauge is finer than standard strings, which is what gives it the lively, powerful feel that top professionals use. This is genuine Yonex string, made in Japan, imported by Sunrise Sports (India).

Who this string is for

The BG 66 Ultimax suits intermediate and advanced players who want a fast, responsive string bed with a satisfying sound on contact. The thin gauge bites the shuttle for precise control on net shots and steep, accurate smashing, which is why it is a favourite for attacking and all-round players who value feel over raw string life.

Who should pick a different string

Be honest with yourself about durability. The 0.65mm gauge that makes this string feel so good also makes it fragile, and hard hitters and mis-hitters often break it within a few weeks. If you break strings quickly or want maximum life, a thicker durability string like the Yonex BG65 or BG80 Power lasts much longer, though with less of the sharp feel. Beginners are usually better starting on a thicker, cheaper string too.

Key features

Thin 0.65mm gauge: a fine gauge that increases repulsion and gives a sharp, lively feel on the shuttle.

High-intensity nylon core: Yonex's high-intensity multifilament core gives around 30% greater durability than normal nylon for a string this thin.

High-polymer nylon outer: the braided outer adds the crisp feel and the loud hitting sound the string is known for.

High repulsion, medium feel: built for power and control together, which is why it is chosen by world-class players.

Specifications

Recommended tension

Most players string the BG 66 Ultimax between 24 and 28 lbs. Around 24 to 25 lbs gives more repulsion and easier power, while 27 to 28 lbs sharpens control for cleaner hitters. String the cross a pound or two lower than the mains, and stay within your racket's rated tension to avoid frame damage.

Frequently asked questions

What is the price of the Yonex BG 66 Ultimax in India?
It is ₹575 at SportsUncle, down from the ₹900 list price. Price and stock on this page are kept current.

What gauge is the BG66 Ultimax?
It is a thin 0.65mm string, finer than standard strings, which is what gives it high repulsion and a sharp feel.

What tension should I string the BG 66 Ultimax at?
Around 24 to 28 lbs works well. Lower for more power, higher for more control, within your racket's rated range.

Is the BG66 Ultimax durable?
It is a thin string built for feel and power rather than long life. Hard hitters may break it within a few weeks, so players who want maximum durability should look at a thicker string like BG65 or BG80 Power.

Is it good for beginners?
It is better suited to intermediate and advanced players. Beginners usually do better with a thicker, more durable string.

Which colours are available?
It comes in assorted colours, with Navy, Yellow, and Royal Blue stocked here. Choose your colour at checkout.

Is this genuine Yonex string?
Yes. It is genuine Yonex BG 66 Ultimax, made in Japan and imported by Sunrise Sports (India), sold new by SportsUncle.

Is there a bulk discount on the BG 66 Ultimax?
Yes. It is ₹500 per set for orders of 10 pieces or more, compared with ₹575 for a single set. The bulk price applies with code 66GRAB when you add 10 or more to your cart.