Advance/Breaker Housing Screw & Washer Set (6pc. Set). Includes: 3 countersunk flat-head type screws and 3 matching starlock washers. 2 sets required to do both engine housings on each engine. Fits: All 650's 1970-84

NGK Iridium Spark Plugs - Cheapest horsepower for your XS you can buy ! BPR7EIX - Adds a solid 2 HP to your 650 While Dyno testing a problem bike (a TX750) it was discovered that customer supplied Iridium spark plugs caused the engine to gain 2 HP. Further Dyno testing on other stock and modified 650's showed the same results! The gain seems to be from improved combustion chamber flame front spread in the 650's old style combustion chamber. The same results were obtained on engines with points, factory Tci and Boyer ignitions. We determined that the shape and position of the nose and electrode caused the gain and not any enhancement of spark. Smoothing of the dips in the power curve, increased acceleration, reduced fuel consumption and up to 4 times longer plug life can also be expected. Dyno by Heiden Tuning.

NGK Spark Plug - B8ES - Fits: XS1/XS1B/XS2 (1970-72)

NGK Iridium Spark Plugs - Cheapest horsepower for your XS you can buy ! BPR8EIX - Fits: 1970-72 650's - Adds a solid 2 HP to your 650 While Dyno testing a problem bike (a TX750) it was discovered that customer supplied Iridium spark plugs caused the engine to gain 2 HP. Further Dyno testing on other stock and modified 650's showed the same results! The gain seems to be from improved combustion chamber flame front spread in the 650's old style combustion chamber. The same results were obtained on engines with points, factory Tci and Boyer ignitions. We determined that the shape and position of the nose and electrode caused the gain and not any enhancement of spark. Smoothing of the dips in the power curve, increased acceleration, reduced fuel consumption and up to 4 times longer plug life can also be expected. Dyno by Heiden Tuning.

Locating Pin - Auto Advance to Camshaft, Contact Point Cam and Auto Advance Drive Disc Locating Pins. OEM Ref. # 93603-07073

Ignition auto advance Retainer Nut. Holds advance unit to Camshaft end. Cogged Nut to replaced damaged original nut. Fits: All 650's 1970-84

XS Performance 7mm Silicone High Tension Spark Plug Wire Set (2pc 20.5") Yellow Color with Copper Core.

Dual Tower XS Performance High Output Ignition Coil 3.3 OHM Primary Resistance. 15K OHM Secondary Resistance. Capable of sustained 45KV output with 12.5v DC input. Capable of sustained 75KV output with 14v DC input. Replaces stock factory Tci ignition coils on All 1980 & up models and works with Pamco ignitions (Non rephased engine types). Requires 7mm Dia. High tension spark plug wires (order separate) and 5K OHM spark plug caps. Warning: Serious High Voltage Click here to see Coil Test Data WARNING!!! Do not operate or apply power to the ignition system with one or both spark plugs disconnected. Operating or applying power to the coil or ignition system with one or both spark plugs disconnected will cause IMMEDIATE FAILURE to the coil. Ignition coils are NOT WARRANTIED for this reason.

Single Tower XS Performance High Output Ignition Coil 3.3 OHM Primary Resistance, 15K OHM Secondary Resistance. Capable of sustained 45KV output with 12.5v DC input. Capable of sustained 75KV output with 14v DC input. Replaces stock contact point ignition coils on All 1970 & up models and works with Pamco 270/ 277 engine rephase ignitions. Requires 7mm Dia. High tension spark plug wires (order separate) and 5K OHM spark plug cap. Warning: Serious High Voltage

Ignition Switch with keys - Fits: XS650 1976-77 May adapt to other years.OEM Ref. #584-82508 (No fork lock on this type)Note: Yamaha has made various versions of this switch and all are sold under the same OEM part number. Ours does Not have a connector plug but wire leads with terminals. You may have to fit this switch to match your bikes harness connections in the headlamp shell. Position 1. Red wire in headlamp shell from main harness (+power feed from battery) goes to red Ignition switch wire.Key Position 2. Power is fed out via 2 brown wires & 1 red wire with yellow tracer.Key Position 3. Power is fed out via 2 blue wires (park position-only tail light is on).This fits onto the XS400. The wiring is not the same, you must match up and modify the wiring. Same for 1979 Daytona.

Ignition Switch with Keys - No Fork Lock on this Type - OEM Ref. #1U3/1U8-82508-81. Fits: XS650 1976-84 (European Models) Note: Yamaha has made various versions of this switch and all are sold under the same OEM part number. Ours does Not have a connector plug but wire leads with terminals (extra opposing terminals included with switch). You may have to fit this switch to match your bikes harness connection in the headlamp shell. Position 1. Red wire in headlamp shell from main harness (+ power feed from battery) goes to red Ignition switch wire. Key Position 2. Power is fed out via 2 brown wires & 1 red wire with yellow tracer. Key Position 3. Power is fed out via red wire with yellow tracer only (park position - only tail light is on).

XS Performance Coil Tower Boots for XS Performance Green Coil #17-6810 or #17-6807 (Pk/2).

XS Performance Coil High Tension Lead Ends (Fit Inside Coil Towers), (Pk/2). Fits: XS Performance Green Coils #17-6810 or #17-6807

Chrome Point Cover Screw, OEM Reference #98980-06020-00.

Ultimate High Output Replacement Coil. Replaces stock factory Tci ignition coils.12 Volt. Primary resistance 2.45 OHMs. Secondary resistance 15ak OHMs 6.6mm mounting holes spaced at 102mm mounting holes center to centerWarning: Serious High Voltage Possible Output as high as 82 KvCaution! Do not operate or apply power to the ignition system with one or both spark plugs disconnected. Do not leave the ignition on with the engine not running. Warranty is void if operated with one or both spark plugs disconnected or if the ignition is left on with the engine not running.