SC Project S1 Titanium Silencer KTM Duke 990 2024-25

Engineered to let you feel every beat of the KTM Duke 990

The SC Project S1 Titanium Silencer delivers the perfect combination of lightweight design, premium craftsmanship, and SC-Project’s unmistakable racing sound.

With a weight saving of over 55% (-2.0 kg compared to the OEM exhaust), the S1 also provides a performance increase of +1.5 hp and +1.2 Nm of torque at 8700 rpm, while improving overall power delivery across the low and mid-range.

In this racing configuration, the S1 comes with a removable dB-killer, offering two distinctive sound options: 98 dB at 4800 rpm with the baffle installed, or a louder 102 dB at 4800 rpm without it. The conical titanium body, carbon fibre end cap, and precision TIG welds combine aesthetics with performance, while the laser-engraved SC-Project logo adds a final touch of racing heritage.

This kit is completely plug-and-play, supplied with a high-quality carbon fibre heat shield, and requires no ECU remapping.

Key Features

• Weight Reduction: -55% compared to OEM (-2.0 kg lighter, SC 1.6 kg vs OEM 3.6 kg)
• Performance Gains: +1.5 hp and +1.2 Nm torque at 8700 rpm with improved response in low and mid-range
• Adjustable Sound: 98 dB with removable dB-killer installed, 102 dB without
• Premium Materials: Ultralight titanium silencer body with carbon fibre end cap and titanium link pipe
• Handcrafted Quality: TIG welds, conical body design, and laser-engraved SC-Project logo
• Plug and Play: Easy installation with no ECU remapping required
• Carbon Fibre Heat Shield: Included for protection and added style
• Italian Craftsmanship: 100% made in Italy with racing technology

Technical Features

• Power: +1.5 hp at 8700 rpm
• Torque: +1.2 Nm at 8700 rpm
• Weight: -2.0 kg (SC 1.6 kg / OEM 3.6 kg)
• Line: Slip-On
• Body material: Titanium
• End cap material: Carbon fibre
• Link pipe material: Titanium
• Mounting type: Bracket
• dB-killer: Yes, removable
• Homologation: Not homologated. 
• Decibels with dB-killer: 98 dB at 4800 rpm
• Decibels without dB-killer: 102 dB at 4800 rpm

What’s Included?

• Slip-On silencer
• Link pipe
• Carbon heat protection
• Springs and screws
• SC-Project stickers
• 24 months SC-Project official warranty

Why Choose the SC Project S1 Titanium Silencer for Your KTM Duke 990?

The SC Project S1 Titanium Silencer is the ideal choice for riders who want lightweight performance, premium Italian engineering, and the flexibility of an adjustable racing sound. With its removable dB-killer, race-inspired design, and proven performance gains, it transforms the KTM Duke 990 into a true track-focused machine.

Please note: All SC-Project exhausts are meticulously handcrafted, with production times ranging from 3 to 15 working days.

UK Stock Items: Orders for items held in UK stock are normally dispatched within 24 hours.

Supplier Items: Items sourced from suppliers are usually dispatched within 5–10 working days once they arrive with us.

Order Cut-Off: Orders placed before 2PM (Monday to Friday) are typically dispatched the same working day, subject to stock availability.

International Delivery: We ship worldwide. Most international orders arrive within 7 working days from dispatch, though delivery times can vary depending on destination and customs processing.

Courier Responsibility: Once an order has been dispatched, delivery timescales are determined by the courier. Tracking information will be provided where available.

Customer Responsibility: Customers must ensure safe receipt of their order. Additional charges may apply if repeated delivery attempts fail due to no one being available, or if incorrect delivery information has been supplied.