Question 1

What parts do I need for a tune-up on my 2021 Harley-Davidson FLHXS Street Glide Special?

Accepted Answer

A complete tune-up on the 2021 Harley-Davidson FLHXS Street Glide Special typically requires air filters, fuel injectors, fluids & additives. This page groups parts commonly associated with that year, make, and model; confirm your trim on product pages for exact fit.

Question 2

How long does a tune-up take on a 2021 Harley-Davidson FLHXS Street Glide Special?

Accepted Answer

A tune-up typically takes 1-2 hours and is rated as easy difficulty. Actual time may vary depending on your experience and the specific parts being replaced.

Question 3

Can I do a tune-up myself?

Accepted Answer

Yes! A tune-up is an easy DIY project that most people can do with basic hand tools. It's a great way to save money on labor costs.

Question 4

Are these parts guaranteed to fit my 2021 Harley-Davidson FLHXS Street Glide Special?

Accepted Answer

These parts are listed for the 2021 Harley-Davidson FLHXS Street Glide Special using manufacturer fitment data. Some products fit every trim, while others require trim confirmation. Use your trim in My Garage or the product page fitment checker to confirm exact fit.

Question 5

What brands make tune-up parts for the 2021 Harley-Davidson FLHXS Street Glide Special?

Accepted Answer

We carry tune-up parts from trusted brands including BMC, Cometic Gasket, K&N, Performance Machine, and TwinPower. Filter by brand to find your preferred manufacturer.

Question 6

How much does a tune-up cost for a 2021 Harley-Davidson FLHXS Street Glide Special?

Accepted Answer

The cost of a tune-up for the 2021 Harley-Davidson FLHXS Street Glide Special depends on the parts and brands you choose. Browse the parts on this page to see current pricing. Doing the work yourself saves significantly on labor costs.

2021 Harley-Davidson FLHXS Street Glide Special Tune-Up Parts

Air Filters

BMC 09-13 Harley-Davidson Touring FLHTCUTG Tri Glide Ultra Classic

Cometic Harley-Davidson Milwaukee 8 Airbox To T/B .031inFiber, All CVO Models,1Pk

Cometic Harley-Davidson Milwaukee 8, Air Cleaner To Throttle Body Seal - 4PK

K&N 2017 Harley-Davidson FLHR Road King Replacement Air Filter

Performance Machine Jet Air Cleaner - Contrast Cut

Performance Machine Vision Air Cleaner W/Bezel - Chrome

Performance Machine Air Cleaner - Black Ano

Performance Machine Air Cleaner - Chrome

Fuel Injectors

Twin Power 08-17 FLH FLT Models Fuel Pump Plate Seal Viton Replaces H-D 61402-08

Twin Power 08-19 FLHT FLHR FLHX FLTRX FLTRU Fuel Pump Replaces H-D 62908-08

Twin Power 08-Up Touring 08-17 Softail 04-17 Dyna 07 Up XL Fuel Pressure Regulator H-D 61015-04A

Twin Power M8 Fuel Injector Replaces H-D 27400015 4.38 Gms/Sec

Fluids & Additives

K&N Harley-Davidson / Buell 3in OD x 4.063in H Black Oil Filter

K&N Harley-Davidson / Buell 3in OD x 4.063in H Chrome Oil Filter

LIQUI MOLY 1L Brake Fluid DOT 4

LIQUI MOLY 1L Motorbike 4T SAE 20W50 Street

LIQUI MOLY 1L Motorbike Fork Oil SAE 15W Heavy

LIQUI MOLY 1L Motorbike HD Synth SAE 20W50 Street

LIQUI MOLY 20L Motorbike 4T SAE 20W50 Street

LIQUI MOLY 20L Motorbike Fork Oil SAE 15W Heavy

Tune-Up for Other Harley-Davidson FLHXS Street Glide Special Years

Other Jobs for Your 2021 Harley-Davidson FLHXS Street Glide Special

Frequently Asked Questions