Description

The ION AMP20 is a full-size titanium performance frame built for riders who want maximum response without excess weight. Fast, controlled, and brutally efficient, this is a modern BMX frame designed to reward precision and commitment across park and transitions.

Constructed in an oxygen-free, argon-purged environment, the AMP20 uses certified aerospace-grade titanium throughout. Critical stress zones — the head tube, bottom bracket, and dropouts — are formed from Gr5 Ti-6Al-4V titanium, while the main tubing is Gr9 Ti-3Al-2.5V. The result is a frame that delivers exceptional stiffness where it counts, with titanium’s natural vibration damping smoothing out harsh impacts and reducing rider fatigue over long sessions.

The geometry is dialled for control at speed. A 20” top tube paired with a 12.95” chainstay keeps the bike stable without feeling lazy, while the steep 75.75° head tube angle sharpens front-end response. The 11.6” bottom bracket height provides quick acceleration out of transitions and corners, and the 71° seat tube angle keeps body position balanced and predictable.

This isn’t titanium for the sake of it. It’s a purpose-built frame that blends strength, ride feel, and modern geometry into a platform that feels fast, composed, and ready to be pushed.

Weight~ 1.335kg


Features

  • Aerospace grade titanium throughout. Gr5 Ti-6Al-4V at the head tube, bottom bracket and dropouts, with Gr9 Ti-3Al-2.5V tubing, welded in an oxygen free, argon purged environment.
  • Stronger and lighter than chromoly. Up to 98% higher yield strength in Gr5 and around 22% in Gr9, at roughly 56 to 57% of the density of 4130.
  • Titanium smooths the harsh hits. Natural vibration damping takes the edge off impacts and reduces rider fatigue over a long session.
  • Geometry dialled for control. A 20" top tube with 12.95" chainstays, a steep 75.75° head tube and an 11.6" mid bottom bracket for sharp acceleration.
  • 14mm slotted dropouts, built in tensioners. Integrated chain tensioners make setup easy and keep the rear wheel aligned, with M8 u-brake mounts if you want a brake.

Specifications

  • Top tube: 19.75", 20.4", 20.7", 21"
  • Chainstay: 12.95" centred, 12.75" slammed
  • Head tube angle: 75.75°
  • Seat tube angle: 71°
  • Standover: 7.7"
  • Bottom bracket height: 11.6"
  • Bottom bracket: Mid, 68mm shell with 46mm internal spacer
  • Material: Gr5 Ti-6Al-4V head tube, bottom bracket and dropouts, Gr9 Ti-3Al-2.5V tubing
  • Dropouts: 14mm slotted, integrated chain tensioners
  • Brake mounts: M8 style u-brake, cable guides not included
  • Head tube: Integrated 1-1/8 headset
  • Seat clamp: 25.4mm seat bolts
  • Wheel size: 20"
  • Note: Not recommended for street use.

ION BMX AMP20 Titanium 20 Inch Frame

Brand: ION BMX SKU: Click to copy the SKU and show the pick location

Sale price$1,599.99 AUD

Or 4 payments of $399.99 AUD with

Colour - Titanium

Top Tube Length - 19.75

20 inch BMX frame sizing

Frames are sized by top tube length. Start with your height, then let riding style decide where in the range you land.

Rider heightTop tube
147 to 157cm19.75 to 20.25"
157 to 168cm20 to 20.5"
168 to 175cm20.25 to 20.75"
175 to 183cm20.5 to 21"
183 to 190cm and up20.75 to 21.5"

The height bands overlap on purpose. If you land in two of them, riding style breaks the tie: longer for flow, trails and transitions, shorter for technical street and park. Plenty of riders, pros included, deliberately ride longer than a chart suggests.

How to measure

Top tube is measured from the centre of the seat tube to the centre of the head tube, so it is not the length of the tube you can see. Measure your current frame that way and compare.

  • Size up for stability through trails and transitions.
  • Size down if you want the bike quick and twitchy for spins and grinds.
  • Top tube is fixed once you buy, but chainstay length, stem length, fork offset and bar position all change how the built bike feels.

Not sure? Tell us your height and how you ride, and we will tell you what we would put you on.

20 inch BMX frame sizing

Frames are sized by top tube length. Start with your height, then let riding style decide where in the range you land.

Rider heightTop tube
147 to 157cm19.75 to 20.25"
157 to 168cm20 to 20.5"
168 to 175cm20.25 to 20.75"
175 to 183cm20.5 to 21"
183 to 190cm and up20.75 to 21.5"

The height bands overlap on purpose. If you land in two of them, riding style breaks the tie: longer for flow, trails and transitions, shorter for technical street and park. Plenty of riders, pros included, deliberately ride longer than a chart suggests.

How to measure

Top tube is measured from the centre of the seat tube to the centre of the head tube, so it is not the length of the tube you can see. Measure your current frame that way and compare.

  • Size up for stability through trails and transitions.
  • Size down if you want the bike quick and twitchy for spins and grinds.
  • Top tube is fixed once you buy, but chainstay length, stem length, fork offset and bar position all change how the built bike feels.

Not sure? Tell us your height and how you ride, and we will tell you what we would put you on.


$1,599.99 AUD

Price match request

ION BMX AMP20 Titanium 20 Inch Frame - Titanium / 19.75

$12.99 flat-rate shipping Australia-wide

Express from $21.99

Free in-store pickup - Brisbane

Availability

19.7520.320.420.721
Titanium

In stock at LUXBMX With supplier Preorder Sold out

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