Yamaha YFZ450 480cc Motor Engine Rebuild Kit Crank Piston Oil Water Pump & Studs NSK Q: Are these bolts hard

Q: Are these bolts hard to remove later

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03-09 Yamaha YZ450F YZ 450F Stage 2 Two Hotcams Hot Cams & HOT CAMS TIMING CHAIN a

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Yamaha YFZ450 480cc Motor Engine Rebuild Kit Crank Piston Oil Water Pump & Studs NSK Q: Are these bolts hard21001 K01, 4906M09800, 247952, M1009, 222086, C3068, 4073, CBK0109,21001 K01,CBK0146,4173,K022,808869,C3068,4906M09800,M1009,71014 5, 5TA 11311 12 00, CR8EIX, 21001, 13029M09800, C3068, 71014 5, 5TA 11311 12 00, CR8EIX, 18P 11400 00 00, 18P 11400 02 00, 18P 11400 04 00, 93306 30644 00, 18P 11681 01 00, 93310 73609 00, 1TD 11651 00 00, 93306 30644 00, HR00047, 8729, 1TD 11400 03 00, 18P 11412 00 00, 18P 11422 00 00 YamahaYFZ450 Carb Big Bore Motor