CST 27.5 x 1.9-2.5 Schrader Tube SV48mm (Wide Range)

Name: CST 27.5 x 1.9-2.5 Schrader Tube SV48mm (Wide Range)
SKU: CT271925SV48
Price: 8.0 AUD
Availability: InStock

$8.00 USD

The CST Wide Range 27.5 x 1.9-2.5 Schrader Tube is a durable, flexible and affordable replacement inner tube that covers many popular 27.5-inch MTB tyre sizes, making it a practical puncture-repair essential for Australian trails, bikeways and everyday commuting.

CST Wide Range 27.5 x 1.9-2.5 Schrader Tube Features

Wide 1.9-inch to 2.5-inch fit range covers many common 27.5-inch mountain bike and trail tyres
High-butyl rubber concentration promotes flexibility, reliable air retention and straightforward installation
48mm Schrader valve works with compatible MTB rims and widely available pump heads
Approximately 0.97mm wall thickness provides a useful balance of durability, packability and everyday puncture protection
Excellent-value replacement or spare tube for hardtails, recreational MTBs, hybrids and compatible e-bikes

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More Product Details:

Product Type: Bicycle inner tube

Wheel Size:

27.5 inches
650B
584mm bead-seat diameter

Compatible Tyre Width:

1.9 inches to 2.5 inches
Approximately 48mm to 64mm nominal tyre width

Common Compatible Tyre Sizes:

27.5 x 1.90
27.5 x 1.95
27.5 x 2.00
27.5 x 2.10
27.5 x 2.125
27.5 x 2.20
27.5 x 2.25
27.5 x 2.30
27.5 x 2.35
27.5 x 2.40
27.5 x 2.50

Approximate ETRTO Fit Range:

Approximately 48-64 x 584
Always confirm the exact size printed on the tube packaging and tyre sidewall

Valve Type:

Schrader valve
Also called an Auto Valve, American Valve or A/V

Valve Length:

48mm

Valve Position:

Straight valve

Tube Material:

High-butyl rubber

Published Wall Thickness:

Approximately 0.97mm

High-Butyl Rubber Construction

The CST Wide Range 27.5 x 1.9-2.5 Schrader Tube uses a high concentration of butyl rubber. Butyl is widely used for bicycle tubes because it offers dependable air retention, good flexibility and practical durability at an accessible price.

The flexible construction allows one tube to expand across a broad range of tyre widths. This makes it particularly useful for families, workshops and riders maintaining several 27.5-inch bikes.

Approximately 0.97mm Wall Thickness

The published 0.97mm wall provides a middle ground between very light race tubes and substantially heavier thorn-resistant tubes.

Primary Measurements:

Wheel diameter: 27.5 inches / 650B
Bead-seat diameter: 584mm
Tyre width range: 1.9 inches to 2.5 inches
Approximate compatible width: 48mm to 64mm
Valve: Schrader
Valve length: 48mm
Wall thickness: approximately 0.97mm

Fit Checklist Before Purchase:

Confirm the tyre sidewall states 27.5, 650B or an ETRTO size ending in 584.
Confirm the tyre width falls between 1.9 and 2.5 inches.
Confirm the rim uses a Schrader valve hole.
Check that 48mm provides enough exposed valve length for the rim.
Confirm the tyre casing is not split, cracked or excessively worn.
Inspect the rim tape for movement, cuts or exposed spoke holes.
Remove any glass, wire, thorn or metal fragment from the tyre before installation.

The CST Wide Range 27.5 x 1.9-2.5 Schrader Tube is best suited to riders who want a dependable, uncomplicated inner tube for a 27.5-inch MTB, hybrid, recreational bike or compatible e-bike.

Product Care

Check tyre pressure before every ride or at least weekly.
Use the pressure range printed on the tyre sidewall as the outer safety guide.
Adjust pressure for rider mass, terrain, tyre volume and conditions.
Avoid riding with insufficient pressure, which can cause pinch flats.
Inspect the tyre regularly for glass, thorns, cracks and casing damage.
Check rim tape whenever replacing a tube.
Keep the valve straight during inflation.
Do not overinflate the tube outside the tyre.
Store spare tubes away from heat, sunlight, petroleum products and sharp objects.
Carry compatible tyre levers and a suitable pump.
Replace damaged tyres before fitting another tube.

Warranty Information

Warranty coverage is subject to CST, distributor and retailer terms.
Manufacturing defects may include a faulty seam or defective valve assembly.
Punctures, pinch flats, installation damage, tyre cuts, damaged rim tape, underinflation, overinflation and impact damage are normally considered wear or use-related issues.
Heat-damaged or incorrectly stored tubes may not be covered.
Keep proof of purchase if making a warranty claim.

Public rider reviews for this exact Schrader-valve variant are limited. Broader feedback about CST butyl tubes is generally positive among riders seeking affordable and straightforward puncture repair.

Common positive themes include: