FCR Engine Services

We don't just build suspension! FCR Suspension offers a first class service department specializing in maintenance, race tuning and high quality repair. If you do not see your particular need listed, please call and we will surely be able to assist you.


FCR Transmission ISF Mod
FCR has an in-house isotropic superfinishing process (ISF) department, and thats where we can blueprint your engines gear sets just as its done on works machines and formula 1 machines. This technology allows your eingine to run much smoother and frely through decreased friction and proper interaction with reciprocating parts.

Years ago, this process was done entirely by hand polishing which made it extremely cost prohibitive to the average consumer. With our updated ISF process, the cost is much improved and the process itself is also much improved over what could be done by hand. This process is the real deal. The ISF process works equally well in road racing and motocross/off-road racing applications.

Even though typical ISF treatments include gear sets and internal transmission parts, all the reciprocating parts will benefit from our ISF process. We use this same process on all of our works suspension parts as well as full works motocross/atv racing components. The mirror like finish reduces friction on all moving surfaces, reducing drag and increasing durability. It also reduces heat significantly, which makes for a smoother running engine. After ISF treatment, every moving part interacts smoothly and the combined reduction in friction unleashes previously trapped horse power. Unleashing trapped power, lowering operating temps, and giving your machine that winning feeling is the best.
Standard Gear Set
Isotropic Surface Finished (ISF) Gear Set
Price $200.00

FCR Factory Works Carburetor Mod (2-Stroke)
FCR Works Carburetor Mods offer exceptional throttle response and gives your dirtbike or motocross bike that throaty factory sound. Available for all 2-stroke motorcycles from 50's to 500's and also ATV's. Superflow flow bench tested! Turnaround time for most carburetor mods is 1-2 days. Please call for more information.
  • All 2-strokes

Price $85.00


FCR Two Stroke Labor Rates
Cylinder Porting and Machine Work (Includes Powervalve cleaning and mod work)$250.00
Head Mod and Machining$100.00
Split Cases, Clean and Inspect and Assemble$250.00
Match and LAPP Cases$85.00
Carburetor Mod (Includes Bore Mod, SPIGOT Mod and Bell Mod)$85.00
Cylinder Replate and Bore (Does Not Include Powervalve Labor)$275.00
Powervalve Labor$50.00
Cylinder Weld Repair (Depending on Severity of Damage)$75.00
Transmission ISF Mod (Price is for Transmission Parts Only)$200.00
Flywheel Mod$75.00
Crankshaft Rebuild and Balance$125.00 Plus Parts
Big-Bore and Stroker Mods Available for Most MINI'SPlease call for Pricing
Big Bore Service Available for most Big BikesPlease call for Pricing

We also offer Standard ''FACTORY'' Engine Rebuilds. Please see our Service Department Page for all Services and Prices.

We also offer OEM Parts and Accessories. Please call for best pricing.


FCR Four Stroke Labor Rates
4-Stroke Head Porting and Mods$500.00
Split Cases, Clean and Inspect and Assemble$250.00
Match and LAPP Cases$85.00
Crankshaft Rebuild and Balance$125.00
Plus Parts Flywheel Mod$75.00
4-Stroke Carb Mod$175.00
4-Stroke Valve Seat Re-cut$50.00 Per Hole
Transmission ISF Mod (Price is for Transmission Parts Only)$200.00
Cylinder Replate$275.00
Big Bores AvailablePlease call for Pricing

We also offer Standard ''FACTORY'' Engine Rebuilds. Please see our Service Department Page for all Services and Prices.

We also offer OEM Parts and Accessories. Please call for best pricing.