LotFancy 12.5x2.75 Scooter Tire & Inner Tube Set for Razor MX350 MX400 — Heavy-Duty Knobby IIR Tire, TR13 Valve

LotFancy's 12.5 x 2.75 knobby tire and matching inner tube set replaces worn scooter and mini bike rubber with a heavy-duty, puncture-resistant option designed for off-road and mixed-surface riding.

If you're restoring a Razor Dirt Rocket MX350 or MX400, swapping tires on an X-Treme X-560, or upgrading a mini pocket bike or Chinese electric scooter that uses the 12-1/2 x 2.75 size, this LotFancy assembly gives you a ready-to-install tire plus TR13 inner tube. The tire is produced from isobutylene isoprene rubber (IIR) rather than a recap, prioritizing airtightness, elastic damping and longer resistance to hardening and cracking. Together with a straight TR13 valve stem and protective cap, the set is intended to deliver dependable rolling performance on dirt tracks, driveways and mixed surfaces.

How durable is the LotFancy tire compared with stock or recap tires?

The LotFancy tire is made from isobutylene isoprene rubber, which offers improved air retention and aging resistance compared with conventional natural-rubber recaps. Its knobby tread is molded for traction and resistance to chunking under typical off-road stresses. You can expect better longevity in storage and under repeated flex than a recap or low-grade replacement.

• IIR compound resists ozone and hardening over time
• Knobby tread resists tearing and provides grip on loose surfaces
• Manufactured as a new tire, not a retread or recap
• Designed to withstand typical scooter and pocket bike loads

Will this fit my Razor MX350, MX400 or other 12-1/2 x 2.75 machines?

This LotFancy set is sized 12-1/2 x 2.75 (12.5 x 2.75), which is the correct physical dimension for many Razor Dirt Rocket models and several X-Treme scooters including the X-560. It also fits many mini bikes, pocket bikes, and Chinese or gas scooters that share the same tire measurement. Always match tire size and wheel width, and verify valve stem compatibility before installation.

• Size stamped as 12-1/2 x 2.75 for direct replacement
• Compatible with wheels accepting TR13 valve inner tubes
• Common fit for Razor MX350 / MX400 and X-Treme X-560
• Works on many mini/pocket bikes and small electric scooters

How is the included inner tube specified and installed?

The package includes an inflatable inner tube with a TR13 straight valve stem and a removable cap so you can use a standard pump or compressor. The tube is sized to seat properly inside the 12.5 x 2.75 tire and is intended to mate with the bead and rim dimensions typical of these scooters. Basic installation follows standard tire-and-tube mounting procedures to avoid pinches and ensure correct seating.

• TR13 straight valve stem with cap for easy inflation
• Tube sized to match the 12.5 x 2.75 tire volume
• Install using progressive inflation and bead seating checks
• Inspect for rim sharp edges and use rim tape where needed

What riding conditions suit this knobby tire best?

The deeper, block-style knobs provide traction on dirt, grass, gravel and mixed surfaces, making this set a good choice for off-road play, trail practice and yard use. It’s not purpose-built for high-speed pavement performance, but it performs well for low-to-moderate speed scooting and mini bike activities where grip and puncture resistance matter. For frequent on-road commuting, consider a smoother tread profile.

• Best for dirt tracks, grass, gravel, and mixed terrains
• Good for recreational off-road use and backyard riding
• Not optimized for sustained high-speed pavement use
• Higher puncture resistance than thin recreational tires

Who is this for: Riders and hobbyists who need a robust replacement tire and tube for small scooters, mini bikes or pocket bikes using the 12-1/2 x 2.75 specification. If you own a Razor Dirt Rocket MX350 or MX400, an X-Treme X-560, or a compatible electric or gas mini scooter and want a non-recap, more air-tight tire with a knobby tread for off-road traction, the LotFancy set is tailored to those needs. Have a mechanic or experienced DIYer install it if you’re unfamiliar with tube-and-tire mounting procedures.