Pro-X Motorcycle Engines and Engine Parts for Yamaha YZ400F
Find parts that fit
We need more information about your vehicle to confirm fit.
Yamaha
YZ400F
SPONSOREDSPONSOREDSPONSOREDSPONSOREDSPONSORED
All
Auction
Buy It Now
528 Results
Top End Rebuild Piston Kit Yamaha YZ400F 1998-1999 WR400F 98-2000 Std Bore 92mm (Fits: Yamaha YZ400F)
Brand New: Pro-X$179.99Only 1 left!Pro-X 03.2400 - Connecting Rod Kit For Yamaha WR400F 1998-2000, YZ400F 1998-1999 (Fits: Yamaha YZ400F)
Brand New: Pro X$136.34Estimated delivery dateEst. delivery Fri, May 24Only 1 left!Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
Wiseco Forged Intake Valve Set - Fits 1998 Yamaha YZ400F (Fits: Yamaha YZ400F)
🚚 Speedy Shipping 🗽 US BasedBrand New: Pro-X$26.95or Best OfferFree shipping3 watchingIntake Valve Set For 1999 Yamaha YZ400F, Fits Wiseco 28.2418-3 (Fits: Yamaha YZ400F)
❄️ Ride in Style This Winter 🚚 Fast & Free ShippingBrand New: Pro-X$26.95Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
or Best OfferFree shippingPro-X Piston Kit Yamaha WR400F 1998-2000 91.97mm Replacement 01.2419.C (Fits: Yamaha YZ400F)
Authorized Pro-X DealerBrand New: Pro-X$151.92Was: $199.89Free shippingPro-X - 28.2418-2 Steel Intake Valve - Center For Yamaha YZ400F WR400F (Fits: Yamaha YZ400F)
Brand New: Pro-X$21.29Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
Free shipping2 watchingPro-X - 01.2419.A Piston Kit "A" Size 91.95mm 12.5:1, Yamaha YZ400F 1998-1999 (Fits: Yamaha YZ400F)
Brand New: Pro-X$151.92Estimated delivery dateEst. delivery Fri, May 24Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
Prox Intake Valve Steel 28.2418-3 98-99 Yamaha YZ400F YZ400 F YZ 400 400F Pro X (Fits: Yamaha YZ400F)
Authorized Pro-X DealerBrand New: Pro-X$19.76Free shippingPro X Intake Steel Engine Valves 28.2418-3 for 1998-99 Yamaha YZ 400F YZ400F (Fits: Yamaha YZ400F)
28.2418-3 Pro X Intake Steel Engine Valves fits YamahaBrand New: Pro-X$19.60$5.99 shippingPro-X Racing 01.2419.A Piston Kit for 1998-00 Yamaha YZ400F / WR400F - 91.95mm
Brand New: Pro-X$151.92Free shippingProX Complete Gasket Set For Yamaha YZ400F '98-99 + WR400F 98-99 34.2418 (Fits: Yamaha YZ400F)
Brand New: Pro-X$123.38Estimated delivery dateEst. delivery Fri, May 24ProX Piston Size A 91.95mm 12.5:1 #01.2419.A for Yamaha WR400F/YZ400F (Fits: Yamaha YZ400F)
100% Satisfaction - Worldwide Shipping - Huge SelectionBrand New: Pro-X$151.92Free shippingYAMAHA YZ400F WR400F Pro X Piston Kit Std Bore 92mm 12.5:1 01.2419.A (Fits: Yamaha YZ400F)
Brand New: Pro-X$151.92Estimated delivery dateEst. delivery Fri, May 24or Best OfferPro-X - 31.2419 - Cam Chain For Yamaha YZ400F/YZ426F 1998-2002 (Made In Japan) (Fits: Yamaha YZ400F)
Brand New: Pro-X$63.09Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
Free shippingProX Oil Filter for Yamaha TTR250/WR400F/YZ426F/WR250F/WR426F/YZ250F/YZ400F (Fits: Yamaha YZ400F)
100% Satisfaction - Worldwide Shipping - Huge SelectionBrand New: Pro-X$12.37Free shippingProX Pro-X Yamaha YZ400F YZ426F WR400F WR426F Timing Cam Chain (Fits: Yamaha YZ400F)
Brand New: Pro-X$54.54Free shipping11 soldYAMAHA YZ400F YZ426F YZ450F Crankshaft Bearing Kit Pro X 23.CBS24098 (Fits: Yamaha YZ400F)
Brand New: Pro-X$89.02or Best OfferFree shippingPro-X Valve Shim 9.48 X 1.925 mm (5 Pieces) Valve Shim Refill Kit 29.948192.5 (Fits: Yamaha YZ400F)
Authorized Pro-X DealerBrand New: Pro-X$13.90Free shippingPro-X Intake Valve for 1998-1999 Yamaha YZ400F - Engine Valve Train Intake ma (Fits: Yamaha YZ400F)
The #1 Seller of Genuine Pro-X Parts on eBayBrand New: Pro-X$24.08Free shippingProX Steel Intake Valve #28.2418-3 Yamaha WR400F/YZ400F/YZ426F (Fits: Yamaha YZ400F)
100% Satisfaction - Worldwide Shipping - Huge SelectionBrand New: Pro-X$22.04Free shippingProX Valve Intake YZ400F '98-99 28.2418-3 (Fits: Yamaha YZ400F)
Brand New: Pro-X$22.01Estimated delivery dateEst. delivery Fri, May 24Pro-X ProX Countershaft Seal Kit 26.640019 26.640019 113771 prx26.640019 (Fits: Yamaha YZ400F)
Authorized Pro-X DealerBrand New: Pro-X$18.71Was: $20.70Free shippingFits 1999 Yamaha YZ400F Cam Chain Pro X 31.2419 (Fits: Yamaha YZ400F)
Fast And Free ShippingBrand New: Pro-X$72.95or Best OfferFree shippingProX Connecting Rod Kit #03.2400 Yamaha WR400F/YZ400F (Fits: Yamaha YZ400F)
100% Satisfaction - Worldwide Shipping - Huge SelectionBrand New: Pro X$147.83Free shippingProX Cam Chain #31.2419 fits Yamaha YZ426F/WR400F/YZ400F/WR426F (Fits: Yamaha YZ400F)
100% Satisfaction - Worldwide Shipping - Huge SelectionBrand New: Pro-X$62.69Free shippingFits 1999 Yamaha YZ400F Piston Pin Pro X 04.1846.9 (Fits: Yamaha YZ400F)
Fast And Free ShippingBrand New: Pro-X$23.95or Best OfferFree shippingYamaha YZ400F & WR400F, 1998-2000, Pro-X Piston - 01.2419.A, YZ 400F, WR (Fits: Yamaha YZ400F)
Authorized Pro-X DealerBrand New: Pro-X$151.92Was: $199.89Free shippingPro X Cam Camshaft Chain 31.2419 (Fits: Yamaha YZ400F)
Huge selection of parts and accessories at low prices!!Brand New: Pro-X$74.48Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
Free shippingProX Top End Gasket Set YZ400F'98-99 + WR400F '98-99 35.2418 (Fits: Yamaha YZ400F)
Brand New: Pro-X$68.42Free shippingPro X C-ChainYZ/WR400F '98-99+YZ/WR426F '00-02 31.2419 (Fits: Yamaha YZ400F)
▀▄▀▄█▓▒░AUTHORIZED PRO-X SELLER - SAME DAY SHIP░▒▓█▀▄▀▄Brand New: Pro-X$62.69Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
Was: $82.49$7.89 shippingPro-X Steel INTAKE Valve for Yamaha WR 400 F 1998-2000 Steel 28 2418-2 16-8934 (Fits: Yamaha YZ400F)
Authorized Pro-X DealerBrand New: Pro-X$16.55Was: $21.78Free shippingPro X Valve Shim 9.48mm OD x 1.40mm For YAMAHA YZ400F 1998-1999 (Fits: Yamaha YZ400F)
Brand New: Pro X$10.59Free shippingPROX EXHAUST VALVE YAMAHA YZ400F WR400F '98-00 NEW (Fits: Yamaha YZ400F)
Brand New: Pro-X$28.00Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
$5.95 shippingYAMAHA WR YZ 400 F 1998-1999 Pro X Complete Gasket Kit 34.2418 (Fits: Yamaha YZ400F)
Brand New: Pro-X$91.15or Best OfferFree shippingPro-X 54.23142 Oil Filter (Fits: Yamaha YZ400F)
▄▀▄▀ ▶LIMITED TIME OFFER. NOW WITH FREE SHIPPING*◀ ▀▄▀▄Brand New: Pro-X$13.59Free shippingProX Crankshaft Bearings for Yamaha YZ450F/WR450F/YZ426F/WR400F/YZ400F/WR426F (Fits: Yamaha YZ400F)
100% Satisfaction - Worldwide Shipping - Huge SelectionBrand New: Pro X$89.02Free shippingYamaha YZ400F & WR400F, 1998-2000, Pro-X Piston - 01.2419.A, YZ 400F, WR 400F (Fits: Yamaha YZ400F)
Brand New: Pro-X$151.92$5.99 shippingPro-X - 23.CBS24098 -Yamaha YZ450F (2003 - 2019) Crankshaft Bearing and Seal Kit (Fits: Yamaha YZ400F)
Brand New: Pro-X$89.02Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
Free shippingOnly 1 left!(5 Pack) Pro X Valve Shim 9.48mm OD x 1.675mm (Fits: Yamaha YZ400F)
Brand New: Pro-X$10.63Free shipping(5 Pack) Pro X Valve Shim 9.48mm OD x 2.925mm (Fits: Yamaha YZ400F)
Brand New: Pro-X$10.62Free shippingPro-X Intake Valve for 1998-1999 Yamaha YZ400F - Engine Valve Train Intake ob (Fits: Yamaha YZ400F)
The #1 Seller of Genuine Pro-X Parts on eBayBrand New: Pro-X$24.08Free shipping(5 Pack) Pro X Valve Shim 9.48mm OD x 2.675mm (Fits: Yamaha YZ400F)
Brand New: Pro-X$10.59Free shippingPro X Piston Kit Standard (91.93 mm) YAMAHA WR400F 1998-2000,YZ400F 01.2419.B (Fits: Yamaha YZ400F)
Authorized Pro-X DealerBrand New: Pro-X(1)1 product ratings - Pro X Piston Kit Standard (91.93 mm) YAMAHA WR400F 1998-2000,YZ400F 01.2419.B$151.92Was: $199.89Free shippingProx Forged Raised Top Piston Kit 12.5:1 91.95 mm Yamaha YZ400F 98-99 (Fits: Yamaha YZ400F)
Brand New: Pro-X$145.91Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
Was: $210.41Free shippingFits 1998 Yamaha YZ400F Intake Valve Pro X 28.2418-2 (Fits: Yamaha YZ400F)
Fast And Free ShippingBrand New: Pro-X$26.95or Best OfferFree shippingProX Steel Exhaust Valve #28.2418-1 Yamaha WR400F/YZ400F/YZ426F (Fits: Yamaha YZ400F)
100% Satisfaction - Worldwide Shipping - Huge SelectionBrand New: Pro-X$27.34Free shippingFits 2015 Yamaha YZ450F - Motorcycle Exhaust System (Fits: Yamaha YZ400F)
🔥 Hot Deals on Powersports Parts & Gear 🏁Brand New: Pro-X$89.95or Best OfferFree shippingPro-X Exhaust Valve for 1998-1999 Yamaha YZ400F - Engine Valve Train Exhaust qi (Fits: Yamaha YZ400F)
The #1 Seller of Genuine Pro-X Parts on eBayBrand New: Pro-X$42.12Free shippingProx PRO X VALVE INTAKE YZ400F 28.2418-2 (Fits: Yamaha YZ400F)
✅ Free Shipping ✅ Experienced Staff ✅ Authorized DealerBrand New: Pro-X$23.31Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
Free shipping(5 Pack) Pro X Valve Shim 9.48mm OD x 1.975mm (Fits: Yamaha YZ400F)
Brand New: Pro-X$10.59Free shippingPro-X Piston Kit Yamaha YZ400F 1998-1999 91.96 mm 12.5:1 (Fits: Yamaha YZ400F)
Brand New: Pro-X$151.92Free shipping5 watchingPROX TOP END GASKET SET YZ400F'98-99 + WR400F '98-99 (Fits: Yamaha YZ400F)
Brand New: Pro-X$59.55Free shippingProX Piston Kit - Yamaha YZ400F '98-99/WR400F '98-00 12.5:1 (91.95mm) (Fits: Yamaha YZ400F)
Same Day Ship - eBay Prime!Brand New: Pro-X$179.92Top Rated Plus- Sellers with highest buyer ratings
- Returns, money back
- Ships in a business day with tracking
Free shippingPro-X Complete Gasket Set - Fits: Yamaha YZ400F 1998-1999 Gasket Kit 34.2418 (Fits: Yamaha YZ400F)
Authorized Pro-X DealerBrand New: Pro-X$109.70Was: $137.88Free shipping