Pirelli SporTube Rear Tube - 27.5" × 2.5-2.8", 48mm Presta
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- →Butyl rear tube for Bonnell 775 mullet setups (27.5" × 2.5" rear Assegai / DHR II). 48mm Presta valve. Durable everyday spare for trail flats when not running tubeless.
- →Aftermarket upgrade — improved performance over stock
- →Verified fitment for 3 bike models
About the Rear Tube
This Pirelli SporTube is the rear-wheel spare for a 775, sized 27.5 by 2.5 to 2.8 inches with a 48 mm Presta valve. It is a butyl tube, so it holds air well between rides and patches easily. It suits riders running tubes full time on the rear, and tubeless riders who want a backup. Keep one with your front tube, because the two wheels need different sizes.
Specs
| brand | Pirelli[2] |
|---|---|
| size | 27.5 x 2.5-2.8"[2] |
| valve | 48mm Presta[2] |
| material | butyl[2] |
| gtin | 8019227370331[2] |
Install notes
Unseat one side of the rear tire and remove the old tube. Run a hand around the inside of the tire to find whatever caused the flat. Fit the new tube with a little air in it, reseat the bead without pinching the tube, and inflate.
Sources
- https://wiredwhips.com/data/catalog.json (accessed 2026-10-19)
- https://worldwidecyclery.com/products/pirelli-sportube-tube-27-5-x-2-5-2-8-48mm-presta-valve (accessed 2026-10-19)
- https://ridebonnell.com/products/bonnell-775-mx (accessed 2026-10-19)
- https://ridebonnell.com/products/bonnell-775-am (accessed 2026-10-19)
- https://ridebonnell.com/products/bonnell-775-am-touring (accessed 2026-10-19)
Last reviewed 2026-10-19
Fits These Bikes
3 modelsMore wheels & tires Parts
All Bonnell Parts →
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- CYC BCD-104 Narrow-Wide Chainring - 38T
- CYC Full Twist Throttle + Matching Grip
- CYC X1 Pro Gen 4 Mid-Drive Motor Kit
- Crankbrothers Stamp 1 Gen 2 Flat Pedals - Black, Large
- Deity Knuckleduster Lock-On Grips - Stealth
- KMC e1 Single-Speed eBike Chain - 3/32", 110 Links
- Magura 8.R Race Disc Brake Pads (MT5 / MT7 4-Piston)
- Magura 9.C Comfort Disc Brake Pads (MT5 / MT7)
- Magura 9.P Performance Disc Brake Pads (MT5 / MT7) (2701627)
- Magura 9.S Sport Disc Brake Pads (MT5 / MT7, E-Bike)
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Pirelli SporTube Rear Tube - 27.5" × 2.5-2.8", 48mm Presta
$21.99