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$44.99
IMPALAPRO Black Seal TPU Inner Tube MTB 29/27.5/26 0.35mm Ultralight 76-84g
★★★★★
$44.99
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About this item
- 🔩 BLACK SEAL TECHNOLOGY – ENGINEERED WHERE TPU USUALLY FAILS: This MTB TPU inner tube doesn't aim to be the lightest on the market — it aims to be the one that won't leave you stranded mid-trail. The Black Seal system integrates premium 0.35 mm thick TPU, full metal valve, double thermal reinforcement at the valve base, and end-to-end bonding with compression monitoring. Result: superior air pressure retention, lower risk of micro-leaks, and a reliability that ultralight TPU tubes simply cannot match.
- 🔧 FULL METAL PRESTA VALVE WITH REMOVABLE CORE: Forget plastic valves that warp under pump heat, crack in cold weather, or leak air from the base after a few rides. The Black Seal 45 mm Presta valve is 100% metal with black anodized anti-corrosion finish and a removable core. Includes a pre-installed black rubber O-ring that seals the base and absorbs stress between metal and TPU, eliminating the most common failure point in mountain bike TPU inner tubes.
- ⚖️ 76–84 GRAMS OF REAL BALANCE BETWEEN WEIGHT AND DURABILITY: At 84 g for the 29" (80 g for 27.5" and 76 g for 26"), this lightweight mtb tube saves over 150 g per wheel compared to a standard 235 g butyl tube — delivering snappier acceleration, lower rolling resistance, and more agile handling on climbs and technical singletrack. The 0.35 mm wall thickness provides far greater durability than 0.20–0.25 mm TPU tubes, without giving up the compact size you need as a spare tpu bike tube in your saddle bag.
- 📐 PRECISION FIT FOR 26", 27.5" AND 29" – NO INTERNAL STRESS: Engineered with a specific tube length for each wheel size (1,865 mm for 26", 1,975 mm for 27.5", 2,080 mm for 29") — not a generic tube stretched to its limit leaving thin spots or bulges. Covers tire widths from 1.9 to 2.5 inches with a maximum stretch of 4.9 %. Compatible with disc and rim brakes, works over tubeless sealant residue. Whether you need a 29 mtb tube, 27.5 or 26 inch mtb tube, the fit is calibrated for each size.
- 🛞 SAFE INSTALLATION OF YOUR MTB INNER TUBE 29, 27.5 OR 26: Before mounting, slightly inflate the tpu inner tube (20–30 %, max 7 PSI) to give it shape. Insert the valve into the rim, distribute the tube evenly inside the tire, then complete inflation to recommended pressure. Do not inflate outside the tire or use metal tire levers.
- ✅ 100% GUARANTEE: Customer satisfaction is our top priority. If you have any questions, issues, or are not satisfied with the product, send us an email and we'll help you resolve it as quickly as possible.
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What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
Trustpilot
★★★★★
Excellent
4.5 average rating
S
Sigalit
🇮🇱 · January 2026
★★★★★
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
V
Verified buyer
🇦🇺 · November 2025
★★★★★
The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
Showing 1–2 of 10 reviews
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