Kastaplast K1 Soft Reko Putter Golf Disc 173-176g Review (2026)

What it is

The Reko is Kastaplast's straight-flying putt-and-approach disc, and this version is molded in K1 Soft, a grippier and more flexible take on the brand's standard K1 plastic. Kastaplast lists the Reko's flight numbers at 3 speed, 3 glide, 0 turn, and 1 fade, and this listing ships in the 173-176g range, the standard tournament-legal weight class most players choose for putters. The mold has a comfortable rounded profile with a smooth bead and a strengthened shoulder for a bit of added durability at the rim edge, a detail Kastaplast highlights on the Reko specifically. K1 Soft is positioned as the grippiest plastic in the Reko lineup, meant for players who want tack over pure durability.

Flight and feel

With 0 turn and only 1 fade, the Reko flies essentially straight with a soft finish, which is why it is a common choice for players who want a putter that goes exactly where they aim it rather than fading noticeably left or right. K1 Soft adds flexibility and a tacky grip on top of that straight flight, giving the disc a land-and-stick quality on touch approach shots and a confident, grabby feel on putts, according to Kastaplast's own product description. The softer blend also means the disc grabs the ground more gently than firmer plastics when it lands short, which some players prefer for touch shots around the green. Because the flight is so neutral, wind can push it off-line more than a stable disc would.

Build quality

Kastaplast is a premium Swedish disc brand, and K1 Soft carries a higher price than most budget putter plastics, reflecting both the brand and the extra tack in the blend. The softer formulation is, by the manufacturer's own description, less durable for heavy ground play and tree-heavy approach use than the standard K1 blend, so players who plan to throw this off the tee through gaps regularly may wear it out faster than a firmer plastic would hold up. The strengthened shoulder on the Reko mold is meant to offset some of that wear at the rim, which is typically the first place a disc shows damage. Overall build quality and mold consistency from Kastaplast has a strong reputation among disc golfers.

Who it suits

Players who putt frequently in cold weather will likely get the most out of K1 Soft, since grip is one of the first things to suffer once temperatures drop and firmer plastics start to feel slick. It also suits players who prioritize a straight, predictable line for spin putting over a stable or understable flight, since the Reko's numbers are close to neutral. Golfers who mainly use a single putter for both putting and regular tree-lined approach shots may find the softer plastic wears faster than they would like, and could be better served pairing this with a firmer disc for approach-heavy holes.

Value

Kastaplast discs generally sit at the higher end of putter pricing compared to entry-level plastics like DX or Classic Soft, and K1 Soft Reko is no exception, so buyers are paying a premium for the brand's grip and finish quality rather than picking the cheapest option available. For players who specifically want a grippy, straight-flying putter and are willing to spend more for the feel, the Reko's reputation and consistent flight numbers make it a reasonable investment. Players on a tight budget who mainly want a functional straight putter may find similar flight numbers in cheaper plastics from other brands, though without the same tacky grip that K1 Soft is known for.

Frequently asked questions