S-H4MET16-FDHLTA
Evolution Line (Titanium) for




Power
+2.1 kW
at 9750 rpm
Torque
+1.8 Nm
at 9460 rpm
Weight
-1 kg
Tailor-made to fit the limited space available within the motorcycle, this system combines performance and durability for extreme conditions and the rigors of off-road racing.
Constructed from lightweight, high-grade, premium titanium alloys, with different thickness in the sections to ensure perfect protection and to reduce overall weight, the system is 26.5% lighter than the stock exhaust. A new profiled surface influences the sound to meet the FIM noise limits for competition, and it adds strength and durability to the muffler while delivering a deep, full sound that embraces the balanced pulse of the single-cylinder engine.
The muffler is the largest possible for the space available. This allows increased sound silencing, which mitigates the impact on the natural environment while also facilitating improved flow for the exhaust gases to make their way from the combustion chamber with as few restrictions as possible. The added strength created by the design aids durability and provides enhanced resilience in the most demanding conditions. It offers a heightened response through the entire rev range and an optimum feeling when the throttle is opened, giving the rider great appreciation of control. Power and torque levels have been increased with an extra 2.1 kW (2.8 HP) at 9,750 rpm and 1.8 Nm at 9,460 rpm being recorded on the in-house dyno in back-to-back tests with a standard stock exhaust system.
The Evolution Line (Titanium) exhaust has a special technique for imprinting the logo on the surface for greater durability and a titanium header with an integrated resonance chamber for optimum performance and sound, which is covered with a newly designed titanium heat shield. It is a simple plug-and-play operation to install, with no remapping needed.
Exhaust system fits on Honda CRF 450 X version.
FOR CLOSED COURSE COMPETITION USE ONLY. NOT INTENDED FOR STREET USE.
| Unit | Akrapovič | Max gain | |
|---|---|---|---|
| Max. power | kW | 42.3 / 9700 rpm | + 2.1 / 9750 rpm |
| HP (m) | 57.5 / 9700 rpm | + 2.8 / 9750 rpm | |
| HP (i) | 56.7 / 9700 rpm | + 2.7 / 9750 rpm | |
| Max. torque | Nm | 47 / 7400 rpm | + 1.8 / 9460 rpm |
| lb-ft | 34.7 / 7400 rpm | + 1.3 / 9460 rpm | |
| Weight | kg | 2.86 | - 1 |
| lb | 6.3 | - 2.3 | |
| % | - 26.5 | ||
| Inst. time | min | 30 |
Akrapovič's product line includes products regulated by national and international emission regulations. Akrapovič makes every effort to provide accurate information on compliance of our products with various regulations and identify if they are for competition-use only or for general street/highway use in the regulated area. However, unless an explicit compliance label is indicated for a specific product, Akrapovič does not make any statement of compliance. It is the user's responsibility to choose an appropriate product for the intended use. As regulations change over time, please check the key on the website to verify the compliance with the current regulations..
Please make sure the product is installed in line with installation instructions and used in accordance with all local regulations, as the compliance label may otherwise not be valid.
RACING IS IN AKRAPOVIČ DNA
RACING PARTNERS

From the R&D department with sound engineering—and through the laboratories that manage and measure the materials and into the in-house titanium foundry and then to production, before evaluation and completion—the manufacture of an Akrapovič exhaust is an internal journey with many facets that are all completed at the company’s state-of-the-art facilities.

Using only the highest standard of materials in the production of every Akrapovič exhaust, our materials are thoroughly inspected upon arrival and assessed in the metallurgical laboratory. Though more than 35 years of experience working with titanium, stainless steel, carbon fibre, aluminium alloys, and more recently ceramics matrix composites, Akrapovič sources only the best materials to produce its high-quality exhaust systems.
Akrapovič is a manufacturer of premium exhaust systems for motorcycles and performance cars. It is renowned around the globe as an innovative company that uses advanced technology and high-quality materials in exhaust system design and manufacture. Akrapovič exhaust systems excel in improved performance, an unmistakable sound, innovative design, lightweight construction, craftsmanship, and durability. There is no mistaking an Akrapovič.


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