4-Cycle Silencers

P/N EXF4100: B91 1" Exhaust Silencer

FITS 1" OD 4 CYCLE PIPES

P/N EXF4102: B91 1 1/8" Exhaust Silencer

TO FIT 1 1/8" OD 4 CYCLE PIPES.

P/N EXF4103: B91 1 5/16" Exhaust Silencer X 6" Long (Short)

FITS 1 5/16" INLET X 6" LONG (TOTAL LENGTH) **NOT LEGAL FOR SANCTIONED KARTING IN THE USA OR CANADA

P/N EXF4104: B91 1 5/16" Exhaust Silencer x 7" Long

FITS 1 5/16" INLET X 7" LONG. WKA/IKF SPEC SILENCER

P/N EXF4106: B91MO 1 5/16" Exhaust Silencer

B91MO 1 5/16" MODIFIED AND OPEN SILENCER, FITS 1 5/16" OD 4 CYCLE PIPES. THIS MUFFLER IS USED FOR LIMITED, MODIFIED, OPEN AND TECUMSEH STAR (10HP) CLASSES.

P/N EXF4108: World Formula Silencer, USA

INCLUDES 2 SPRINGS.  APPROVED BY BRIGGS & STRATTON TO BE USED WITH WORLD FORMULA PIPE P/N EXF5950.

P/N EXF4110: World Formula Silencer, Canada

INCLUDES 2 SPRINGS.  CIK APPROVED FOR CANADA TO BE USED WITH WORLD FORMULA PIPE P/N EXF5950.

P/N EXF4115: MINI91 1" Exhaust Silencer, "Slip On"

SLIP ON EXHAUST SILENCER, 1" (SAME LENGTH AS THE MINI91 EXF4117). USE CLAMP FAS6580 TO MOUNT TO ANY PIPE

P/N EXF4116: MINI91 1 1/8" Exhaust Silencer, "Slip On"

SLIP ON EXHAUST SILENCER, 1 1/8" (SAME LENGTH AS THE MINI91 EXF 4115 & EXF4117). USE CLAMP FAS6581 TO MOUNT TO ANY PIPE

P/N EXF4117: MINI91 1/2" Exhaust Silencer

THREADED EXHAUST SILENCER, 1/2".

P/N EXF4118: MINI91 3/4" Exhaust Silencer

THREADED EXHAUST SILENCER, 3/4" NIPPLE. THIS SILENCER FLOWS BETTER THAN THE RLV EXF4117 AND BRIGGS & STRATTON'S P/N 294599S

P/N EXF4120: Silencer for MMRA

NOT LEGAL FOR IKF OR WKA **NOT LEGAL FOR SANCTIONED KARTING IN THE USA OR CANADA

P/N EXF4125: RLV Silencer for Tillotson 225RS Engine

1" INLET X 8.25" LONG

Stainless Hose Clamp

CLAMPS USED TO HOLD THE SILENCER ON TO THE PIPE.