KTM · PowerParts
The KTM Akrapovič "Slip-On Line" is a performance-focused slip-on silencer designed for KTM motocross and competition use. This exhaust is described as the quietest exhaust in motocross history and was specially developed for the new SX generation, targeting stricter FIM noise limits for 2013 while still emphasizing strong output and high-level workmanship.
This specific KTM PowerParts exhaust (part number 78905979000) is manufactured from high-end titanium and is built with a reinforced titanium end cap in key areas. It also features a removable noise reduction insert and is stated to be compatible with use alongside the original header, offering flexibility in how it is set up.
Construction
Manufactured from high-end titanium, this Slip-On Line silencer focuses on unbeatably low weight while maintaining the premium build quality expected from a factory-developed component. A titanium end cap reinforced in key places supports durability where it matters most.
Performance
Developed with race-level intent, this Akrapovič slip-on is listed with an increase in peak performance as a key reason it is used by the KTM SX Factory Team. It is positioned for riders looking to sharpen top-end output without changing the full exhaust system.
Design
A removable noise reduction insert allows the exhaust note and sound output to be adjusted to specific needs. The design is also described as complying with stricter FIM noise limits for 2013, reflecting its development for regulated competition environments.
Performance
Specially developed for the new SX generation, the Akrapovič "Slip-On Line" is presented as a forward-looking silencer built around modern noise expectations while still prioritizing performance. KTM notes that the KTM SX Factory Team uses this silencer for its peak-performance benefit, low weight, and high-quality workmanship, making it a focused upgrade for riders who value factory-style component quality and purpose-driven design.
Comfort
This slip-on is stated to fit in combination with the original header, making it a straightforward route to an Akrapovič setup without requiring a header change. KTM also recommends pairing it with a factory header for a further increase in rideability and power development, giving riders a clear path for staged exhaust upgrades based on their performance goals.
| Part Number | 78905979000 |
|---|---|
| Product Line | KTM PowerParts |
| Approvals | CCCUO |
| Model — Model Years |
|---|
| 450 SMR — 2013–2014 |
| 450 SX-F — 2013–2014 |
| 450 SX-F Factory Edition — 2014 |
| 450 XC-F — 2013 |
Vehicle compatibility as captured from KTM for article number 78905979000.
Provided by KTM. Opens in a new tab.
