Top Gear | Top Gear (2002 TV series) | Top Gear (current format) | Landing gear | Fifth Gear | gear | Valve Corporation | Metal Gear | Metal Gear Solid | landing gear | W. Michael Gear | Sega Game Gear | Metal Gear Solid 2: Sons of Liberty | Metal Gear (series) | Metal Gear 2: Solid Snake | Gear Fighter Dendoh | Fixed-gear bicycle | Conventional landing gear | conventional landing gear | variable valve timing | Valve | Top Gear (1977 TV series) | Synchronization gear | Poppet valve | Gear | Walschaerts valve gear | valve | tricycle landing gear | Metal Gear (video game) | Metal Gear Solid 4: Guns of the Patriots |
These modifications included outside Caprotti valve gear, roller bearings (both Timken and Skefco types) on the coupled and tender axles in varying combinations, and an experimental steel firebox.