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YAS820TH
Exhaust Yasuni R4 Derbi Black
Delivery from German Warehouse - Aptuvenais pieejamības datums: 20.03.2026.
Out Of Stock
376.00€ 418.00€
Yasuni R4 exhaust for Derbi / Aprilia / Gilera
The Yasuni R4 is a high-performance exhaust system built for heavily tuned engines with increased displacement in the 84–95cc range.
Yasuni R4 performance
A precision-welded expansion chamber paired with the updated 2025 Max Pro aluminium silencer delivers a clean, uncompromising racing look. Volume and shape are designed for maximum output in the mid to high rev range, with a wide powerband. In practice, that means strong torque kicks in at mid RPM and stays solid all the way up.
The system can be easily combined with most 84cc - 94cc racing cylinders available on the market.
Due to the larger volume and the strong performance, we recommend that you use a larger carburetor such as the PWK 30, a big valve reed valve and a reinforced clutch to prevent clutch slip.
Specifications Yasuni R4 high-end racing exhaust
Low mount exhaust
Suitable for 50cc motorcycles with Derbi engine such as Derbi Senda X-Treme, Aprilia SX, Gilera SMT etc.
Black silencer
Without road approval
- Article no.
- YAS820TH
- Brand
- Yasuni
- Colour
- Black
- EAN
- 8404012099274
- Exhaust finish
- Coated
- Exhaust mount
- Low
- Homologation
- No
- Product type
- Exhaust
- Series
- R4
- Tuning Level
- High-end
- Weight
- 3,56 kg
- Aprilia
- RX 50 (as from 2006 D50B1);RX 50cc Factory Euro 4 ;RX Enduro 50cc (D50B0) - after 2006;SX 50cc Euro 4;SX 50cc Factory Euro 4 ;SX SM 50cc (D50B0) - after 2006;
- Bultaco
- Astro Enduro 50cc (DERBI);Lobito SM 50cc (DERBI);
- Derbi
- Derbi Special Comp.;Senda 50cc (before 2000) - (tubular);Senda 2000 50cc (before 2004) - (perimeter) Euro2;Senda DRD PRO Racing SM(after 2005)-(D50B0 Euro 3);Senda DRD PRO SM (after 2005) - (D50B0 Euro 3);Senda DRD Racing 50 SM after 2011 - (D50B0 Euro 3);Senda DRD SM (before 2000) - (tubular);Senda DRD SM (before 2004) - (perimeter)-Euro 2;Senda DRD X-Treme 50 R '10 - '17 - (D50B0 Euro 3);Senda DRD X-Treme SM '10 - '17 - (D50B0 Euro 3);Senda Enduro (before 2000) - (tubular);Senda Enduro 2000 (before 2004) - (perimeter)-Euro 2;Senda Racing SM Euro 4;Senda R DRD Enduro (before 2000) - (tubular);Senda R DRD Enduro (before 2004) - (perimeter)-Euro2;Senda R DRD PRO Enduro (after 2005) -(D50B0 Euro 3);Senda R DRD Racing Enduro (after 2005)-(D50B0 Euro 3);Senda R X-Race Trail '05 - '10 - (D50B0 Euro 3);Senda R X-Treme Enduro '05 - '10 - (D50B0 Euro 3);Senda SM 50cc (before 2000) - (tubular);Senda SM 2000 (before 2004) - (perimeter)-Euro 2;Senda SM Limited Euro 4;Senda X-Race 2000 (before 2004) - (perimeter)-Euro 2;Senda X-Race SM '05 - '10 - (D50B0 Euro 3) ;Senda X-Race Trail (before 2000) - (tubular);Senda X-Trem Enduro (before 2000) - (tubular);Senda X-Trem Enduro (before 2004)-(perimeter)-Euro 2;Senda X-Treme R Euro 4;Senda X-Treme SM '05 - '10 - (D50B0 Euro 3) ;Senda X-Trem SM (before 2000) - (tubular);Senda X-Trem SM (before 2004) - (perimeter) - Euro 2;Senda à partir de 2018;
- Gilera
- GP Replica 50cc (DERBI);GSM 50cc (DERBI);H@K Euduro 50cc (DERBI);RCR Enduro 50 (as from 2011 D50B0);RCR Enduro 50 (until 2005 EBS050) (tubular);RCR Enduro 50cc 2006 (D50B0) - (perimeter);RCR Euro 4;Sioux Enduro 50cc (Derbi);SMT Euro 4;SMT SM 50 (2011-2012 D50B0 ZAPABB00);SMT SM 50 (after 2013 D50B0 ZAPABB01);SMT SM 50cc (DERBI) - (tubular);SMT SM 50cc 2006 (D50B0) - (perimeter);Zulu Enduro 50cc (DERBI);
- None
- None
- Valenti Racing
- RME;SM 50;
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