Stage 1 Upgrade Explained

A Stage 1 Upgrade involves modifying a Harley-Davidson’s exhaust system, air filter and fuel metering system to allow it to increase available power, breathe more efficiently and allowing it to run as efficiently as possible.

When the air filter is free-flowing and has a match-tuned exhaust, the performance from the bike greatly increased. This is thanks to moving more air and fuel through the engine to generate more torque and power. Additionally, Stage 1 Free Flow and Heavy Breather Air Filters deliver a sweet sounding exhaust system, as well as a big boost that you can feel with an extensive RPM range.

Stage 1 Upgrade usually consists of recalibrating the air intake and exhausts systems together to improve the air flow by using specialist aftermarket accessories that are designed to improve performance. A Stage 1 Upgrade does not involve the internal engine modification of a Harley-Davidson.

Alternative Stage ¼ and Stage ½ Upgrades are also available but are seen by many as a poor alternative to the full Stage 1 Upgrade. They are a cheaper substitute to a full Stage 1 Upgrade but do not provide the performance increases that many riders desire. The addition of drilled holes in the plastic air-filter plate work by restricting air to the air filter instead of getting air via the air filter to the engine.

Harley-Davidson Stage 1 Personalisation

There is a wide range of choice when it comes to a Harley-Davidson Stage 1 Upgrade. For the full range of Stage 1 Upgrade options call our Leeds (0113 245 2499) or Gateshead (0191 461 9100) servicing teams. Alternatively, view our selection of exhaust systems and air filters below.

Screamin Eagle Ventilator - with chrome cover

Screamin' Eagle Extreme Billet

Screamin' Eagle Ventilator

V&H Short Shots

Jekill & Hyde Twin Cam Chrome

Jekill & Hyde Black Spotrster 

How much does a Harley-Davidson Stage 1 Upgrade cost?

Due to the various options that are available when it comes to a Harley-Davidson Stage 1 Upgrade prices vary. It starts at around £700 and increases to over £2000 at the top end. For more information, or to discuss your individual requirements, call the Leeds (0113 245 2499) or Gateshead (0191 461 9100) servicing teams.

S.K Motorcycles Ltd (trading as Harley-Davidson Gateshead & Harley-Davidson Leeds) are directly authorised and regulated by the Financial Conduct Authority. Our Firm Reference Number is FRN821369. Finance is available subject to status. S K Motorcycles Limited is authorised as a CREDIT BROKER and NOT A LENDER. This means we work with a number of carefully selected credit providers who may be able to offer you finance for your purchase, we may receive a fee for arranging credit.

Harley-Davidson Gateshead, Eslington Park, Ellison Rd, Gateshead NE8 2QU, Harley-Davidson Leeds, Unit 1, Wellington Road Industrial Estate, Wellington Rd, Leeds LS12 2UA