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Black Friday Doorbuster Akrapovic Full Titanium Evolution System S-h4met16-fdhlta Collection [i0sfg8SC]

$62.99 $201.99 -69%

The Black Friday Doorbuster Akrapovic Full Titanium Evolution System S-h4met16-fdhlta Collection [i0sfg8SC] has been expertly designed to maximize the limited space of a motorcycle. Engineered for off-road racing, this system offers high performance, durability and dependability in challenging e

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The Black Friday Doorbuster Akrapovic Full Titanium Evolution System S-h4met16-fdhlta Collection [i0sfg8SC] has been expertly designed to maximize the limited space of a motorcycle. Engineered for off-road racing, this system offers high performance, durability and dependability in challenging environments.

This system is 26.5% lighter than factory-standard parts, with construction from high-grade, lightweight titanium alloys providing ideal thicknesses for optimal performance with minimal weight. Its profiled surface ensures the sound produced meets FIM noise limit regulations, with a deep, full tone and balanced pulse of the single-cylinder engine, as well as durability for the muffler.

Space is limited, so the muffler was designed to be as big as possible. This reduces the noise pollution in the environment while also improving exhaust flow, resulting in an accelerating response across the rev range and improved throttle control. Additionally, the system produces 2.8hp (2.1 kW) more power at 9,750rpm and an extra 1.8Nm torque at 9,460rpm compared to stock parts.

Titanium is featured prominently throughout the system, with a titanium header featuring an integrated resonance chamber for optimal power and sound output, as well as a newly designed titanium heat shield.

Installation is straightforward, requiring only plug-and-play operation. Furthermore, no fuel adjustments or ECU reprogramming are necessary.

This system has been engineered exclusively for closed-course circuits and is not suitable for use on roads or highways.

Compatibility

This system will fit on the following motorcycle models:

  • Honda CRF450R / RX 2021-2023
Performance Data
  Unit Stock Akrapovic Max gain
Max. power kW 40.2 / 9650 rpm 42.3 / 9700 rpm + 2.1 / 9750 rpm
  HP (m) 54.7 / 9650 rpm 57.5 / 9700 rpm + 2.8 / 9750 rpm
  HP (i) 53.9 / 9650 rpm 56.7 / 9700 rpm + 2.7 / 9750 rpm
Max. torque Nm 46.6 / 7200 rpm 47 / 7400 rpm + 1.8 / 9460 rpm
  lb-ft 34.4 / 7200 rpm 34.7 / 7400 rpm + 1.3 / 9460 rpm
Weight kg 3.89 2.86 - 1
  lb 8.6 6.3 - 2.3
  %     - 26.5
Inst. time min   30

What Our Customers Say

January 1, 2026

Absolutely no complaints!

An outstanding product. Very clever.

- Nisien N..

January 1, 2026

Absolutely no complaints!

It’s a very well-made and handy tool.

- Hereward D..

January 1, 2026

Absolutely no complaints!

I'm thrilled by how great this is.

- Ulrica F..

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