STREET PERFORMANCE SERIES FOR IFP, IFP-R SPORTSTER SET-UP MANUAL - Alignment Kit - Adjusting Spring Preload - Setting Ride Height - Adjusting Rebound

Oct 23, 2026

Set-up and adjustment manual for FOX Street Performance Series IFP and IFP-R shocks used on Sportster models. Covers alignment kit installation steps using specific fasteners and spacer parts, then provides procedures for adjusting spring preload with required spanner tools and measuring target eye-to-eye shock lengths for different shock sizes. Includes rebound damping adjustment guidance with click counts and factory settings. Provides maintenance recommendations, rebuild/service interval notes, warranty terms, and how to request service or return authorization.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages5

Reading Time13 min

AccessFree to download

Contents

Alignment Kit

Adjusting Spring Preload

Setting Ride Height

Adjusting Rebound

Maintenance

Rebuild / Service Intervals

Warranty

Service

STREET PERFORMANCE SERIES FOR IFP, IFP-R SPORTSTER SET-UP MANUAL 13461 Dogwood Drive Baxter, MN 56425 1.831.740.4619 ALIGNMENT KIT 018-05-046 213-01-376 Contents: (4) 018-05-046 Fastener, Standard: Washer,[0 .531 ID X 1.062 OD X .100 TH] (4) 213-01-376 Eyelet Parts: Spacer [0 .500 ID X 0.87 OD X .30 TLG] 1. Install the shock eyelet on the swing arm first. If shock is equipped with rebound feature, position the knob rearward. 2. Add spacers to align upper shock mount. 3. Torque all hardware to manufacturers specifications. 605-01-208 rev B 2 of 5 13461 Dogwood Drive Baxter, MN 56425 1.831.740.4619 ADJUSTING SPRING PRELOAD FOX Street Performance Series IFP and IFP-R shocks are equipped with spring preload adjusters. Use preload spanner to adjust spring preload. To adjust the spring preload, rotate the preload ring above clockwise to increase spring preload and counterclockwise to decrease spring preload. Measure the spring preload length while the bike is on a stand and the rear wheel is off the ground. Both shocks should be adjusted to the same position. SETTING RIDE HEIGHT To set the ride height, the rider should be seated on the bike in riding position, while a helper or wheel chock holds the front end upright. With the rider seated, have a friend measure the eye to eye length of the shock and adjust the spring preload to obtain the target shock lengths listed below. Rider not shown. 11 inch long shocks should measure 10.55 inches between eyelets with rider on bike. 12 inch long shocks should measure 11.25 inches between eyelets with rider on bike. 13 inch long shocks should measure 12.00 inches between eyelets with rider on bike. 605-01-208 rev B 3 of 5 13461 Dogwood Drive Baxter, MN 56425 1.831.740.4619 ADJUSTING REBOUND The rebound adjust feature on your FOX Performance Series IFP-R shocks gives you the ability to externally adjust the shocks’ rebound damping. Adjustments are made by turning the knob on the eyelet located on the end of the shock absorber. The rebound damping affects how quickly the rear shock extends (rebounds) after the motorcycle travels over bumps and depressions on the road. The rebound adjuster has about 24 clicks of adjustment. Start counting clicks from the adjusters most clockwise limit. The factory setting is 12 clicks out from bottom. Both rear shocks should be adjusted to the same position. For slower rebound, turn the black knob clockwise. NOTE: Check to make sure the shocks have adequate clearance to adjacent components before riding. 605-01-208 rev B 4 of 5 13461 Dogwood Drive Baxter, MN 56425 1.831.740.4619 MAINTENANCE PROPER INSPECTION AND MAINTENANCE IS ESSENTIAL TO MAINTAIN THE PERFORMANCE AND RELIABILITY OF YOUR SHOCK ABSORBERS. To avoid corrosion, you should keep the shocks and springs clean and free of dirt and moisture. The wiper seal will clean deposits from the shaft, but the shock won’t necessarily fully compress every time. This means you could accumulate dirt at the bottom of the shaft and underneath the jounce bumper. Make sure you clean these areas completely to prevent shaft corrosion. Avoid using a high-pressure washer near the shaft seals or adjusters, as this could drive dirt inside the shock. Make sure the ends of the spring and shock threads are clean and free of dirt before adjusting the preload ring this will make the adjustment easier and reduce wear. Ideally, the shocks should be clean around the adjusters when changing the rebound damping setting. A small blast of contact cleaner or brake cleaner before making adjustments will keep these parts clean and operating smoothly for years. REBUILD / SERVICE INTERVALS Under normal road use conditions the shock absorbers should last for the lifetime of the vehicle. Only in race or extreme use, service may be required. WARNING: Shock rebuilds take special knowledge and tools. It is essential that this is performed by an authorized FOX technician or servi

FAQs

How do I install the shock eyelet and alignment spacers?

Install the shock eyelet on the swing arm first. If rebound is equipped, position the knob rearward, then add spacers to align the upper shock mount and torque all hardware to the manufacturer’s specifications.

What tool and procedure are used to adjust spring preload?

Use a preload spanner to adjust the preload ring above clockwise to increase preload and counterclockwise to decrease preload. Measure spring preload length with the bike on a stand and the rear wheel off the ground, and set both shocks to the same position.

How should rebound damping be adjusted on FOX Performance Series IFP-R shocks?

Turn the knob on the eyelet end of the shock absorber to adjust rebound damping, using about 24 clicks. Start counting clicks from the most clockwise limit; the factory setting is 12 clicks out from bottom, and both rear shocks should match the same position.

Oct 23, 2026

Uploaded by Alex Sinclair