Exhaust BGM PRO DDL 55 mm – Piaggio / Gilera Runner FX-FXR / Aprilia SR / Italjet Dragster 125–180cc 2T

Description

High-performance sports exhaust BGM PRO, designed in cooperation with DDL, is intended for modified Piaggio Maxi 125–180cc 2T AC/LC engines with a 55 mm crankshaft stroke.

The exhaust is specially developed for powerful long-stroke 55 mm configurations, primarily sports 172cc and 180cc conversions. The design provides a pronounced sporty engine character and efficient operation in the higher RPM range.

Depending on the engine configuration, the optimal operating range is approximately 9,000–10,500 rpm.

Technical specifications

• Manufacturer: BGM PRO
• Development / design: DDL
• Type: sports / Racing exhaust
• Engine: Piaggio Maxi 2T
• Engine displacement: 125–180cc
• Cooling: AC / LC
• Intended for crankshaft stroke: 55 mm
• Recommended use: sports 172cc / 180cc setups
• Operating range: approximately 9,000–10,500 rpm
• Intended for higher-performance conversions
• Reference code: DDLPIA18055

Suitable for

• Aprilia SR 125 (1999–2001) – ZD4PX
• Aprilia SR 150 (1999–2001) – ZD4PX
• Gilera Runner FX 125 (1997–2003) – ZAPM07000
• Gilera Runner FXR 180 (1997–2003) – ZAPM08000
• Italjet Dragster 125 (1999–2003) – DR5010
• Italjet Dragster 180 (1999–2003) – DR5810

Intended for 55 mm Long-Stroke conversions

This exhaust version is specifically developed for engines with a 55 mm crankshaft stroke. It performs best on properly assembled 172cc and 180cc sports engines, where the cylinder, cylinder head and port timings are correctly adapted to the increased stroke.

With a properly assembled setup, the exhaust enables strong power development at higher RPM and allows the engine to rev freely in the upper RPM range.

Advantages

• Developed specifically for 55 mm stroke
• BGM PRO quality
• DDL design
• Intended for powerful Piaggio Maxi 2T engines
• Excellent for 172cc and 180cc Racing conversions
• Strong operating range at high RPM
• Suitable for AC and LC engines
• Intended for demanding tuning projects

Important note

The exhaust is not intended as a conventional Plug & Play replacement for a standard engine, but primarily for purpose-built 55 mm long-stroke configurations.

When using a 55 mm stroke crankshaft, it is necessary to correctly adjust the cylinder, cylinder head, cylinder height and port timings. Due to the changed engine geometry, the position of the exhaust connection may also change, so depending on the configuration, additional adjustments may be required during installation.