Align Torque Tube Tail Unit

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Align Torque Tube Tail Unit
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This is an optional Align Torque Tube Tail Unit, and is intended for use with the Align T-REX 450 family of helicopters. This torque tube provides improved structural rigidity, ball bearings and smooth rudder performance.


  • Redesigned tail gear box with higher material quality and easy maintenance
  • Utilizes dual point attachment design for zero play and higher precision control feel
  • Constructed with CNC aluminum alloy, with precision ball bearing at moving points
  • Improving structure rigidity and smoothness, allowing rudder control to be more precise and smooth
  • 6061-T6 Aluminum alloy material and CNC processed
  • Use for T-REX 450.


  • (1) 450PRO V2 Metal plate left side
  • (1) 450PRO V2 Metal plate right side
  • (1) 450PRO V2 Metal tail unit set
  • (1) Collar
  • (1) 450PRO Tail rotor shaft assembly
  • (1) Long umbrella gear
  • (1) Vertical stabilizer mount
  • (2) Bearing MR83ZZ 3x8x3mm
  • (2) Bearing MR106ZZ 6x10x3mm
  • (1) I-shaped Arm
  • (1) Mount Link
  • (1) Slider Shaft
  • (1) Bearing mount washer
  • (2) Tail pitch control link
  • (1) Bearing holder
  • (1) Linkage ball A 2x2.5mm x 4.75x7.18mm
  • (4) Bearing F681XZZ 1.5x4x5x2mm
  • (2) Bearing MR74ZZ 4x7x2.5mm
  • (2) Bearing FMR52ZZ 2x5x2.3mm
  • (2) Socket button head screw 2x4mm
  • (4) Socket button head screw 0#x4mmx80T
  • (4) Socket button head screw 2x5mm
  • (1) Socket button head screw 2x12mm
  • (2) Socket screw 2x18mm

This product was added to our catalog on June 25, 2012

Verified Owner
Thursday, Dec 29 2016 (about 7 years ago)
Align Torque Tube Tail Unit
Build quality is solid and the tail has no slop. Fantastic improvement over the stock Align 450 style helis. Very smooth when you torque down the screws. No binding and tinkering! Must have for any setup that's compatible!
Monday, Jan 28 2019 (about 5 years ago)
Align Torque Tube Tail Unit
Solid tail upgrade from my "old" 450 Pro V2 3gx (the oddball kit put out that falls in-between flybar & flybarless DFC).

Mine didn't come with the "new" shorter pitch links shown in the photos & parts list. Amain had the links shipped out after ~5 minutes of chatting on the website. Be sure to disassemble & lock tight everything.

This is MUCH more solid & smooth compared to my old tail but the assembly suffers from dreaded "chinesium" quality. After snugging up all the screws mine developed some drag. Still extremely smooth but it wasn't as free as it should have been so I had to back a couple of screws off. I'm going to disassemble it & make sure all of the bearings are seated properly & hopefully that will take care of it. (Every single pivot is running micro ball bearings, not bushings with the exception of the pitch links)