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Yamaha Raider | Stratoliner | Roadliner
Performance Engine Components

ALL of our Roadliner / Stratoliner Performance Engine packages feature the experience and quality of
Patrick Racing Logo

Yamaha Raider Big Bore Kit 120 Ci 3850

120 CI Big Bore Kit

Years of experience enables Patrick Racing to offer you the best performance and value in custom modifications for your Raider. This Big Bore Kit has been developed to dramatically increase the performance of your engine. Send us your cylinders and we will bore hone hone to 103 mm then “replate” them. PR will then custom repaint your cylinders and custom highlight all fin edges. Kit comes complete with oversize piston kit (pistons, rings, wrist pins and clips) and oversize head gaskets. “Stock” base gaskets not included.

More Info

Sug. Retail $1325.00
PCS Price $1299.95


Piston Gasket Set


Yamaha Raider Head Port and Polish 3005

Head Porting and Polishing

Years of experience enables Patrick Racing to offer you the best performance and value in custom headwork. Stage One kit includes custom porting and Serdi valve job on (your) cylinder heads. Send us your heads and we'll do the rest

Sug. Retail $1115.00
PCS Price $1099.95

Yamaha RS Warrior / MT-01 HEAD PORT & POLISH Stage 2

Head Port & Polish


The Stage 2 kit includes the “complete” oversize valve application. PR will custom port and complete Serdi valve job, throat your valve seats for oversize valve application and install (8) new valves and springs.  Send us your heads and we'll do the rest!

  • 1.5mm intake and 2mm exhaust oversize one-piece stainless valves
  • Custom PR high lift spring kit
  • Titanium retainers
Sug. Retail $1810.00
PCS Price $1789.95


Yamaha Raider Flat Tappet Cam Kit

Flat Tappet Cam Kit

All parts in this cam kit are proprietary and cannot be mixed and matched with other stock or aftermarket parts. Complete kit comes with hard weld cams, ceramic faced hydraulic lifters and adjustable aluminum push rods.  Kit must be used with PR Hi-Lift Spring Kit (shown below). Kit requires (good, stock) cam core exchange or a $400.00 core charge deposit.

Sug. Retail $1339.00
PCS Price $1319.95
Cam Core Required

Core charge is 90% refundable (for 30 days) upon receipt of good stock cores. 50% refundable if good stock cores are received (31 – 60 days). No refund is given if cores are not received after 60 days.

Yamaha Raider Valve Spring Kits

Valve Spring Kits

Custom Patrick Racing heavy duty hi-lift springs. Kit includes inner and outer springs, lowers and titanium retainers. American made for the best performance possible. A must when using the PR Cam Kit (above).

Sug. Retail $314.00
PCS Price $303.95

Yamaha Raider Adjustable Push rod Set

Adjustable Push Rods

Custom PR adjustable aluminum push rod set. Will fit PR Cam Kit, or stock cams.

Sug. Retail $225.00
PCS Price $214.95 are divisions of

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