BRAND NEW N2 CAM PART # 298125 or 494638 or DS199195 Cams run to 6,500 rpm with stock hydraulic lifters; recommend solids not be installed Stock base circle sizes allow the use of stock pushrods V2 and N2 are bolt-in cams for stock applications designed for up to 6,000 rpm N3 cam is bolt-in for 04-06 883/1200 engines with stock springs & heads, (Cams for 04-06 models with more than .515 lift may need different valves, springs and collars) V4 and N4 are for stock or modified applications and have a slightly higher idle speed, but can be used with stock hydraulic lifters and springs; rpm range of 2,500-6,500 V6 and N6 designed for modified 1200s to 80 and/or high compression pistons: stock springs and hydraulic lifters recommended; rpm range 2,500-6,500 V8 and N8 designed for modified 883, 1100 and 1200 stroker models; stock springs and hydraulic lifters recommended; rpm range 2,000-6,000 N6 designed for modified 1200s to 80 and/or high compression pistons: stock springs and hydraulic lifters recommended; rpm range 2,500-6,500 N8 designed for modified 883, 1100 and 1200 stroker models; stock springs and hydraulic lifters recommended; rpm range 2,000-6,000