Classic/Bent Axle Bars (Spare Part / Upgrade) V2+V3

These Classic/Bent Axle Bars are replacement or upgrade parts for the TKM Ultimate K’NEX Train System V2 (Last Generation) and V3 (Current TKM Train System).

Both are compatible with V2 and V3 train systems and are designed for use with the Classic wheel assemblies only.

This listing allows customers to purchase axle bars individually including the axle mounting screws for maintenance, replacements, or to upgrade existing trains without needing to buy full wheel assembly kits.

Axle Bar Options

Classic Axle Bars
The original axle bar design used on both V2 and V3 train systems.

Bent Axle Bars
A revised version that positions the wheel assemblies slightly further back on the train body.
This change improves the visual wheel placement when viewed from the side and is purely a cosmetic adjustment.

Both versions remain fully compatible with existing Classic wheel assemblies, V2 and V3 Systems.

What’s Included

Each listing includes:

• 1 × Axle Bar
• 2 × Axle mounting screws

Screw sizes supplied:

• Classic Axle Bars – 25mm screws (Original V2 and V3)
• Bent Axle Bars – 20mm screws (New Visual Upgrade)

Compatibility

Designed for use with Classic Wheel Assemblies from the TKM V2 and V3 Train Systems.

Bent axle bars use 20mm screws instead of the original 25mm screws, which are included with this listing.

Important

This listing is for individual axle bars only and does not include wheel assemblies or bearing mounting screws. (Re-use your old ones)

Configuration Guide

For Classic Bar Replacement 

• Middle cars require 1x Classic
• Front cars require 2x Classic

For Bent Bar Upgrade/Replacement 

• Middle cars require 1x Bent
• Front cars require 1x Classic (Zero Car) and 1x Bent