We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Gray brass G 1/4in male-female extension coupler 25mm height diamond knurled finish

Bykski

Bykski G 1/4in Male/Female Extension Coupler 25mm

SKU CH-2R3V-BZR2T

Brass G 1/4in male/female extension coupler adds 25 mm clearance for custom water-cooling loops

  • Product typeCPU Block
  • Product colorGray
  • G 1/4in male/female threads connect any compatible fitting
  • 25 mm body height keeps the extension compact in tight loops
  • Brass construction resists corrosion in non-aluminium custom loops
  • Diamond knurling gives secure finger grip for tool-free assembly
  • 30 mm overall length including thread clears obstacles without excess bulk

Bykski G 1/4in Extension Coupler

The Bykski G 1/4in Male/Female Extension Coupler adds 25mm of threaded height between fittings in a custom liquid-cooling loop. It is built from brass with diamond knurling for grip and suits builders who need extra clearance between components.

Sustained loop reliability

Brass construction resists corrosion in non-aluminium loops under continuous coolant flow. The diamond-knurled body stays secure during repeated thermal cycles. Internal finish limits use with DI water coolants and makes it incompatible with PrimoChill Opaque and VUE series fluids.

Pre-order checklist

Verify every mating component uses G 1/4in threads and that no aluminium parts exist in the loop. Confirm your coolant is not DI water based and avoid the excluded PrimoChill ranges. Ensure 30mm total installed height fits the available space.

How it compares

Measured against everything we stock in Heatsinks & Water Blocks, at today’s prices. Recalculated every night.

Price $18.99
Pricier than about 60% of the 609 comparable items (median $15.99).

New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Product typeCPU Block
Product colorGray

Questions about this item

Does the brass extension coupler add noticeable flow restriction or heat when the loop runs continuously?

The 25 mm brass spacer simply extends a G 1/4 in. port; its short internal path adds negligible restriction and no measurable heat during all-day operation.

What fittings or tubing must I already have to connect this 25 mm coupler?

You need G 1/4 in. threaded fittings or tubing ends on both sides; the coupler mates male-to-female with any standard G 1/4 in. hardware.

Will this coupler corrode if I keep my older nickel-plated blocks and radiators in the same loop?

The brass body is safe in non-aluminium loops, but avoid DI-water coolants and PrimoChill Opaque or VUE fluids as they may react with the internal finish.

More in Heatsinks & Water Blocks

Similar items