MSW Bike Inflator Co2 Cartridge - 38g - Threaded - Single
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MSW Bike Inflator Co2 Cartridge - 38g - Threaded - Single

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SKU: PU3620

Regular price $14.99

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CO2 inflators and cartridges are efficient and lightweight. Designed to be portable and easily stowed in your pocket or saddle bag. Take the chore out of tire inflation.

Threaded CO2 cartridge available in 38 gram size. MSW CO2 Cartridges fit all MSW inflator heads as well as our competitors' inflators.

Inflation Guide


MSW makes several different sizes of inflation cartridges, all designed to air your tires up quickly and keep your bike rolling when the trails don’t cooperate. To choose the appropriate cartridge size, find your size and maximum inflation pressure on the sidewalls of your tires. Inflating your tire as closely as possible to the max pressure will minimize your chance of pinching your tube and getting another flat.

Tire Size 18g 25g 38g XLA 40
700 x 23c 120-130 150 260 ( 2 tires to 120) 250 (2 tires to 110)
700 x 28c 90-100 100-120 190 (2 tires to 90) 180 (2 tires to 85)
700 x 35c 60-70 65-75 100-110 90-100
700 x 40c 35-40 50 85 80-85
29" x 2.0-2.5" 25-30 40-50 35-50 35-50
29" x 3.0"     15-20 15-20
27.5" x 40c 45-50 50-55 85-95 80-90
27.5" x 2.0-2.5" 20-30 25-35 45-60 45-55
27.5" x 3.0" 10-15 15-20 25 20
27.5" x 3.5"     10-15 10-12
27.5" x 4.0"     2-8 2-8
26" x 2.0-2.5" 20-30 30-40 45-65 45-60
26" x 3.0" 12-19 14-16 20-25 20-25
26" x 3.5" 5-10 8-12 10-15 10-15
26" x 4.0"   2-7 5-10 5-10
26" x 5.0"     1-5 1-5


NOTE: This chart is meant as an approximate guide. Exactly how much air you can get out of a cartridge is dependent upon a number of variables: exact casing size and tire volume, altitude, air temperature, cartridge temperature, and a host of other factors all influence the final pressure in your tires. Total volume may also differ when comparing two tires of the same labeled size from different manufacturers. This becomes increasingly important for high volume tires where small dimensional variations can result in significant changes in volume.


When Will My Order Ship? Due to COVID-19 and continued supply chain disruptions it may take 3-7 business days before your order ships and you receive a shipment confirmation. Most shipments leave our warehouse within 48 hours of placing an order. Some take longer if shipping from a vendors warehouse. Once your order has shipped a tracking number will be e-mailed to you with a delivery estimate. This info can also be accessed from your Account Page. Free Shipping Promotion We're happy to offer FREE shipping on orders over $75 within the continental United States. This excludes some oversized items. For example bikes, wheels, trainers, indoor bikes, car racks, etc. see your shopping cart for more details. In Store Pick Up If you would like to pick up your order at one of our stores just select the "Free Store Pickup" shipping option when ordering. Please note that our online store and our retail stores maintain separate inventories. Purchases made online with an in-store pickup option will be shipped to the store from our online warehouse. One of our team members will contact you when your order is ready for pick up. This process usually takes 1-4 days.

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