Delivering impressive performance gains for small four-stroke motorcycles, the FMF Mini Powercore 4 Big Bore System with Stainless Steel Header is engineered for mini bike enthusiasts seeking more power and lighter weight. Using a Hi-Flo stainless steel core, robust aircraft grade aluminium canister, and durable formed end caps, this exhaust system offers immediate throttle response and substantial weight reduction versus standard equipment.

Features

• Hi-Flo stainless steel core with formed end caps for enhanced exhaust flow
• Aircraft grade aluminium canister delivers maximum strength with minimal weight
• Pounds lighter than OEM exhaust for improved power-to-weight ratio
• Closed course Big Bore system delivers notable horsepower increase
• Stainless steel Hi-Flo header resists corrosion and offers long service life
• Notice: Closed course use only

Specifications

• Item ID: 041071
• Type: Complete System
• Version: Big Bore
• Header Material: Stainless Steel
• Header Type: Hi-Flo
• Weight: 2.5 lbs
• Carb Warning: No

Vehicle Fitment

Honda

• CRF50F (2004–2026)
• XR50R (2000–2003)