BOLD MAGENTA part numbers are new for 2026 PARTS-UNLIMITED.COM 2026 | STREET ENGINE ENGINE 1374 DISCLAIMER: *EMIS (EMISSIONS CATEGORIZATION CODE). SEE PAGES 4-6 FOR CATEGORY CODES, IMPORTANT EPA/CARB EMISSION DEFINITIONS AND REGULATORY COMPLIANCE AND NOTICE REGARDING NOISE REGULATIONS. PRODUCTS NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES IF NOT CATEGORIZED AS “1” OR “4”. FITS MODEL DESCRIPTION KIT CONTENTS PART # HONDA CRF250L 13-20, CBR300R 15-19, CB300F 16-18 Intake: 0.420” max valve lift, 1.315” installed height, 60 lbs. seat pressure, 187 lbs. open pressure; Exhaust: 0.400” max valve lift, 1.160” installed height, 52 lbs. seat pressure, 149 lbs. open pressure 4 CrSi valve springs (2 intake/2 exhaust), 4 titanium spring retainers, 4 H.T. steel base washer 0926-3285 KAWASAKI EX-6 Ninja 650R 06-16 Intake: 0.4” max valve lift,1.215” installed height, 39 lbs. seat pressure, 136 lbs. open pressure; Exhaust: 0.4” max valve lift, 1.215” installed height, 39 lbs.seat pressure, 136 lbs. open pressure 12 CrSi valve springs (6 intake/6 exhaust), 12 titanium valve spring retainers (6 intake/6 exhaust), 12 H.T. steel shims (for intake valves), 12 steel base washers (6 intake/6 exhaust) 0926-3395 YAMAHA YZF-R1 04-06 Intake/exhaust: 0.340” max valve lift, 1.325” installed height, 48 lbs. seat pressure, 118 lbs. open pressure 20 CrSi valve springs (12 intake/8 exhaust), 20 titanium valve spring retainers (12 intake/8 exhaust), 20 steel base washers (12 intake/8 exhaust) 0926-3268 LIGHTWEIGHT RACING VALVE SPRING KITS •Designed to out-perform and outlast the factory valve springs • Kit features lightweight, high-strength CrSi valve springs, H.T. steel base washers and titanium spring retainers (unless noted in chart) • Complete kit, everything you need to for a complete valve spring swap FITS MODEL PART # HONDA CRF1000 Africa Twin 17-21 0926-3407 FITS MODEL PART # KAWASAKI EX-6 Ninja 650 06-16 0926-3395 FITS MODEL PART # SUZUKI GSX-R1000 05-08 0926-3251 HIGH-PERFORMANCE OVATE WIRE BEEHIVE VALVE SPRING KITS • Progressively wound springs using Kobe super-clean, chrome silicon-based wire that is heat-treated and shot-peened • Tight-tolerance, FEA-designed hardened steel Posi-Loc™ style upper retainers or titanium retainers to ensure correct assembly height and resist keeper “pull through” • Hardened H.T. steel base washers control lateral movement •Kits use OEM-style valve keys (sold separately) •Made in the U.S.A. 0926-3285 0926-3407 0926-3395
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