Harley Davidson 103 Engine Upgrades

Stage 4 and 5 upgrades vary on capacity stage 4 being 103ci and the new steel liners that Screamin Eagle offer in the stage 5 allow a 96103ci twin cam to step up to 110ci without the need to bore cases.

Harley davidson 103 engine upgrades. I was told I could only upgrade to a Stage II kit due to the frame of my bike. Answer 1 of 6. 103 Engine Performance Upgrades I called my nearest Harley Davidson dealer to talk to them about the Stage IV kits.

This Stage III Street Performance Kit combines system-matched Screamin Eagle big bore cylinders high compression pistons and performance cams and valve train components with the Original Equipment cylinder heads for a cost-effective boost. As part of our Stage 2 Performance Kit we take the key mechanical elements of your Harley engine and perform high performance upgrades giving substantial engine performance increase. Thats a 96 or 103 Harley putting out 110-plus hp with a torque number to match or with a few quick parts substitutions bumping those numbers up into the 125 ranges torque and horsepower.

After stage 3 upgrade a 103 cc Harley engine will get 24 off more torques and an incredible amount of 34 of horsepower. A full Cobra exhaust system a fuel management system and Cobras Power Flow air cleaner assembly. Thats power and performance thatll get your attention the kind of oomph thatll have a bagger bike towing the motor home and not the other way around.

SuperStreet 2-1 50 State Exhaust System for 2018-2020 Softail models. Stage 2 Usually consists of added cams to increase intake and exhaust flow. GRM Performance Centre Melbourne Stage 2 upgrades specifically suited to Harley Davidson consists of the following.

In this video we disassemble and prep for our 103 Twin Cam performance upgrades from Cobra. This is enough to transform any Harley into one exciting and very rideable machine. Build a fast reliable 110 cubic inch Twin Cam hauler without having to remove the motor from the chassis.

Upgrading from a lower engine to 103 can cause some minimal problems if it does not meet its requirements. Stage 1 Exhaust and Air Cleaner Let it breathe. We start with the increased diameter cylinder and high compression pistons as the Stage 3 upgrade kit.