SF Performance is a full service race shop, specializing in Motorcycle, Snowmobile, Off Road and ATV, Repairs and Mods, also Parts and Accessories.

 Owner Steve Frye has over 25 years in the motorcycle industry. We work closely with local Pro Riders to further improve our already awesome Engines and Suspension.

We are pleased to announce that Cory Hutter will be doing our custom valving for KYB and Showa Suspension. Cory is one of the best in the business for suspension tuning. Cory was the owner/founder of A-Ride suspension and then moved on to be a Factory Suspension Tech for Team Yamaha. This arrangement with Cory shows SF Performance's commitment to supplying the best products and services to our customers. We will however continue to do suspension maintenance in house, i.e. oil changes, seals, bushings, spring changes etc. 

We will work with you to make your machine right FOR YOU!

Some, but not all of the services we offer are:

  • In House 4 Stroke head repair with our DCM Valve Machine
  • Japanese Street Bike Tune Ups and Repair 
  • Full 2 and 4 Stroke Repairs and Mods
  • Porting, Boring, Honing
  • Carb Boring, Base Mill Cylinders
  • Full suspension service, Shock and Fork Rebuilding and/or
  • Suspension Revalving
  • Welding - Mig, Tig, Stick, Gas
  • Crank Rebuilding                                                     
  • Wheel/Rim Truing

Basically, if your dirt bike or quad is broke or you want it to go faster and/or handle better than stock, we can help!

TO SCHEDULE ANY SERVICE WORK PLEASE EMAIL US  OR CALL 815-444-6895 AND ASK FOR STEVE. or CLICK HERE to fill out a service request form.

               *****SERVICE PRICES LISTED BELOW*****


Shown above, Coated Piston, Ceramic Main Bearings,  Polished Transmission and Williams One Piece Dimpled Titanium Valves. ALL AVAILABLE THRU SF PERFORMANCE! 

PRICES BELOW

Hourly Shop Rate is $75/hr.

Street Bike Tune Up - Oil/Filter Change, Clean or replace air filter, adjust/lube chain or change shft oil, service battery plus a multi point safety check and test ride. - $190 + Parts.

Spark Plugs, Valve Adjustments, and Carb Cleaning are extra and vary in price depending on how much body work etc. is involved. PLEASE call for a Quote on your particular bike!

2 Stroke Porting (cylinder and head supplied) - $350.00

4 Stroke - HEAD SUPPLIED (OFF BIKE) LABOR ONLY, PARTS EXTRA

#1 Remove Valves, Clean and Soda Blast, inspect and Cut (4) seats, reassemble and set shims....  $150.00 (5 Valve Head $170.00)

#2 Stage 1 Porting (match seats to ports, Blend Angles) Includes #1....  $250.00

#3 Full Porting (carb, intake boot, exhaust flange must be supplied) Includes #1 and #2....  $400.00

Complete  Engine service: Prices are for motor only, brought in OR shipped to us. We will however remove and reinstall your motor for you for an additional charge.

Tear down Motor, Inspect Crank, Bearings , Entire Trans, Clutch, Cases, and Reassemble with Required Parts, Including Top End Rebuild -

4 Stroke - $425.00 + Parts (Includes #1 above + cylinder honing if nessassary)

2 Stroke - $375.00 + Parts (Includes power Valve removal and cleanig + Cylinder Honing)

Shipping is extra and prices do NOT include Boring, Replating, Case Replacement, Case Welding or Rethreading Stripped Holes 

    SUSPENSION WORK: Suspension brought in off bike. (fork prices are for BOTH forks)

FORK SEAL REPLACEMENT....  $65.00 + PARTS AND OIL

COMPLETE FORK SERVICE....  $95.00 + PARTS AND OIL (includes disassembly, oil change and cleaning of inner cartrages)

FORK REVALVE....  $235.00 + PARTS

SHOCK REBUILD (plus parts and oil, nitrogen is included)....  $80.00 + PARTS

SHOCK REVALVE....  $185.00 + PARTS