Brompton P and T Line 4-speed Rear Wheel - new for 2025

Brompton P and T Line 4-speed Rear Wheel - new for 2025

This is a the superlight Advance (1 or 4 speed) rear wheel as used on the Brompton P and T Line, it has a presta valve 

The same wheel is used for the both the four and single speed, the difference is the sprockets / spacers that you install 

This wheel was introduced in late 2025, it has a lightweight (aero style, slightly less aero than the original T line wheels) rim, 28 double butted spokes and an aluminium hub body and a 4 speed free hub body, the rear wheel is undone using an Allen (Hex) key

The Brompton rear wheel size is 16 x 1 3/8 - ISO/ETRTO 37-349 (although really that's the default tyre size - the wheel takes tyres with a diameter 349mm)

Tools required for removal:

• 5mm Allen key 

Removing the rear wheel:

• Place the bike in the stand, fold the rear end and remove the tension from the chain by disengaging the sprocket from the chain.
• Use the 5mm Allen key to loosen the skewer, avoid the skewer nut from turning. remove the skewer. 
• Deflate the tyre and let it pass through the brake calliper

Tools required for fitting: 

• 5mm Allen key
• Torque wrench

Fitting the rear wheel:

• Ensure it is the correct orientation
• Seat the chain on the cassette
• Insert the skewer and fit the skewer bolt
• Tighten to 7NM using the torque wrench 
• re-engage the chain tension 

The Brompton rear wheel is laced in a single cross laced style  

The weight of the wheel is approx 600g on our scales 

Brompton Q part code: Q104005

This rear wheel replaces QRW4PT (Q102678)

When you need to replace the rim or spokes you need the following:

• Rim: Q103912 (TBC) 
• Spokes: Q103915 (TBC)