Harley Davidson Evolution Stage 1

Evolution Industries Stage-1 Clutch Kits set the standard for clutch performance.

Harley davidson evolution stage 1. The basic purpose of a Stage One is to modify the air filter exhaust system and fuel metering system to run as efficiently as possible allowing it to breathe freely and as a result increasing the available power. All modifications are made by bolt-on changes or modifications to external components on the engine. Stage One Evolution Harley-Davidson engines involve no internal changes made to the engine.

They feature Kevlar friction plates and hardened steel drive plates. Future articles and reviews are in the works to talk more about these stages and upgrades. The next step is Stage 2 which includes a cam upgrade and Stage 3 and 4 and beyond include upgrading your heads big bore cylinders and stroker kits.

When you think about efficient fuel management replacing the old intake ECU mapping and exhaust you are talking about stage 1 upgrades. A Stage 1 upgrade is the most common because it can be done by most riders at home and the result can be the best bang for your buck. All you do outside the motor is stage 1 improvements.

1340 FORGED PISTONS - 1051 010. When the bike is fitted with an uprated air filter exhaust the performance from the engine is greatly increased. Stock File in attachment.

H-D Parts Screamin Eagle Evolution 1340. Stage 1 Performance Package. A Stage 1 upgrade involves modifying a Harley-Davidsons exhaust system air filter and fuel metering system allowing an increase in power torque.

Hi does anyone has a Stage1 for 2010 Harley Davidson StreetBob 1600 with 76hp. Stage I Air Cleaner. No need for a dyno tune.