BOLD MAGENTA part numbers are new for 2026 ENGINE & COOLING PARTS-UNLIMITED.COM ATV/UTV | 2026 ENGINE & COOLING 1101 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 SIZE PART # ARCTIC CAT DVX 400 04-08 Intake guide Std. 0930-00345 Spring kit - 0926-02152 CAN-AM Maverick/X3 17-20 (900cc triple engines) White Diamond® intake valve Std. 0926-3319 Intake/exhaust valve guide Std. 0926-3318 HONDA ATC185 80-83 Black Diamond™ intake valve Std. KW-30-30120 Black Diamond exhaust valve Std. KW-30-30122 Intake guide Std. KW-30-4069 Exhaust guide Std. KW-30-4069 Spring kit - KW-30-40211 ATC200 81-87 Black Diamond intake valve Std. KW-30-30120 Black Diamond exhaust valve Std. KW-30-30122 Intake guide Std. KW-30-4069 Exhaust guide Std. KW-30-4069 Spring kit - KW-30-40211 TRX250X/300EX 87-09 Black Diamond intake valve Std. KW-30-30088 Black Diamond exhaust valve Std. KW-30-30090 Intake guide Std. KW-30-3030 Exhaust guide Std. KW-30-3030 Spring kit - KW-30-30411 FITS MODEL DESCRIPTION SIZE PART # HONDA (CONT) TRX400EX 99-14 Black Diamond intake valve Std. KW-30-3115 Black Diamond intake valve Oversized 34mm KW-30-3116 Black Diamond exhaust valve Std. KW-30-3117 Intake guide Std. KW-30-3120 Exhaust guide Std. KW-30-3120 Spring kit - KW-30-31111 TRX450R 04-05 Black Diamond intake valve Std. 0926-0139 0926-0138 Black Diamond intake valve Oversized 37 mm 0926-0140 0926-0138 Racing Tenslite® titanium intake valve Std. 0926-2922 Black Diamond exhaust valve Std. 0926-0141 0926-0138 Black Diamond exhaust valve Oversized 31 mm 0926-0142 Intake guide 0.4360” Std. size 0930-00195 Exhaust guide 0.4360” Std. size 0930-00215 Spring kit Springs will handle up to 0.440” lift. 0926-01381 VALVES, GUIDES AND SPRINGS •Black Diamond™ valves feature one-piece stainless steel construction with stellite tips and special impregnation to improve wear properties and reduce friction; White Diamond® valves feature one-piece construction and hard chrome stems • Valve guides are made of Ampco-45, a high-performance compound with 80% copper for great heat conductivity and 5% nickel for wear resistance (unless noted in chart) • Some guides are C674 bronze valve guides, a softer Manganese guide that can be more easily reamed and finished with a high-quality ball hone and a battery-operated electric drill (see chart) VALVES, GUIDES AND SPRINGS continued on next page. •Spring sets contain springs and titanium upper collars; keepers and lower collars included as required •Valves and guides are sold each; spring kits come complete for one motor •Made in the U.S.A. 0926-0250 0926-2656 KW-30-3120 1 Spring kit not required. 2 Keepers not included; must use OEM. 5 C674 Manganese bronze valve guide.
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