Thumpstar Large Frame 14" Rear Wheel Assembly - 3009 Black Rim w/ Stainless Spokes & 20mm Axle - Fits TSX125/TSX140/TSK141E

The 3009 14" Rear Wheel Assembly is engineered for serious pit bike enthusiasts who demand maximum performance and durability from their large-frame machines. This complete wheel assembly features a heavy-duty 1.85x14" black powder-coated steel rim laced with high-tensile stainless steel spokes to a 20mm axle hub, creating the perfect balance of strength, reliability, and style for aggressive riding.

Military-Spec Construction Details

Premium Rim Construction

• 1.85x14" Heavy-Gauge Steel Rim

  • 12-gauge cold-rolled steel construction

  • Widened profile for optimal tire stability (fits 80/100-14 to 90/100-14 tires)

  • Electrostatic powder-coated black finish (50μm thickness)

  • CNC-rolled bead seat for perfect tire sealing

Aerospace-Grade Spoke System

• 304 Stainless Steel Spokes

  • 8-gauge thickness (3.9mm diameter)

  • Mirror-polished corrosion-resistant finish

  • 4-cross lacing pattern for maximum strength

  • Pre-stressed and tensioned to 120kgf

  • Brass spoke nipples with anti-seize coating

High-Performance Hub Assembly

• 20mm Hardened Axle System

  • 4140 chromoly steel axle (HRC 32-36 hardness)

  • Dual sealed industrial bearings (6204-2RS)

  • CNC-machined 6061-T6 aluminum hub

  • Type III hard anodized surface treatment

  • Universal sprocket mounting pattern

Technical Specifications

• Wheel Diameter: 14 inches (356mm)

• Rim Width: 1.85 inches (47mm)

• Overall Width: 5.5 inches (140mm)

• Hub Width: 135mm (center-to-center)

• Axle Diameter: 20mm (included)

• Spoke Count: 36 (18 inner/18 outer)

• Weight: 6.8 kg (complete assembly)

• Max Load Rating: 150kg (330lbs)

Performance Advantages

• Enhanced Stability: Larger 14" diameter improves high-speed handling

• Superior Impact Resistance: Heavy-duty construction withstands big jumps

• Optimal Tire Fitment: Wider 1.85" rim properly supports larger tires

• Precision Balancing: Factory-balanced to <5g at 60km/h

• Reduced Maintenance: Stainless spokes and sealed bearings for longevity

Precision Fitment

Engineered as a direct bolt-on replacement for:

• Thumpstar TSX125 (all model years)

• Thumpstar TSX140 (Pro and Race editions)

• Thumpstar TSK141E (Electric models)

• Compatible with most large-frame pit bikes using 14" rear wheels

Track-Ready Features

• Pre-Greased Bearings: Packed with high-temp lithium grease

• Pre-Installed Valve Stem: 8mm rubber stem with brass core

• Dynamic Balancing: Computer-matched spoke tension

• Universal Sprocket Compatibility: Works with 36T to 52T rear sprockets

Complete Package Contents

• 1 x Fully assembled rear wheel

• Pre-installed 20mm axle with spacers

• Stainless steel spokes and nipples

• Mounting hardware kit

• Technical installation guide