TYK Industries 18x8.50-10 Lawn Mower Inner Tubes 2-Pack — TR13 Short Rubber Valve, Thicker Butyl for Better Puncture Resistance

Two heavy‑duty 18x8.50-10 inner tubes with TR13 short rubber valve stems designed to replace worn tubes in lawn tractors, trailers, ATVs and other small‑vehicle tires.

These TYK Industries inner tubes come as a 2‑pack sized for 18.5x8.50-10 tires and feature a TR13 straight rubber valve stem. Constructed from thicker butyl rubber and factory test‑inflated, they emphasize longer hold times, better puncture resistance and an improved seal around the valve stem compared with standard replacement tubes.

How do these inner tubes help keep yard equipment running longer?

Thicker, higher‑quality butyl rubber reduces air migration and resists small punctures, so tires stay at the correct pressure for longer. Each tube is factory tested before shipping to minimize installation surprises.

• Up to 4× thicker material than many budget tubes for improved durability
• Pre‑inflation testing at the factory to verify integrity
• Better puncture and leak resistance to reduce downtime

What valve stem does this tube use and why does it matter?

These tubes use the TR13 short rubber valve stem — a straight rubber stem roughly 1.38 inches long made to fit a 0.453 inch rim hole. A robust vulcanized seal at the stem prevents air loss and makes inflation and deflation straightforward.

• TR13 rubber stem: 1.38 in length, straight design for small wheels
• Designed for 0.453 in rim hole openings to ensure compatibility
• Vulcanized seal around the stem for improved leak prevention

Which vehicles and wheels are these 18x8.50-10 tubes compatible with?

While sized for 18.5x8.50-10 lawn mower and yard tractor tires, the tube fits many small vehicles and equipment. Check your rim diameter and valve hole size to confirm fit before purchasing.

• Common fits: lawn tractors, riding mowers, garden tractors
• Also compatible with trailers, garden wagons, generators and small ATVs
• Works with rims that accept a TR13 valve stem and a 0.453 in valve hole

What warranty and quality checks come with these tubes?

TYK Industries backs these inner tubes with a three‑year warranty covering manufacturing and workmanship defects. The tubes are test‑inflated at the factory, which helps ensure a smooth installation and reduces the risk of latent defects.

• 3‑year warranty against manufacturing and workmanship defects
• Factory test inflation performed for each tube before boxing
• Quality control focused on valve seal and wall uniformity

Who is this for: This 2‑pack is intended for homeowners, landscapers and small‑equipment owners who need reliable replacement inner tubes for 18.5x8.50-10 tires. It’s a practical choice for anyone who wants a tougher-than‑average tube with a TR13 short rubber valve stem for lawn tractors, trailers, garden wagons, generators and many compact ATVs or go‑karts.