14-19 HONDA Grom: DG Performance Stainless Steel Head pipes (Stainless Steel) DG Performance Specialties, founded in 1973. Performance is their middle name.Optional stainless steel header pipe for use with either DG Performance Specialties R-Series or V2 Slip-On mufflers.Made in the U.S.A.Note: For closed course competition ONLY. NOT intended for street use.