Robust Engine Internals
Boost your vehicle’s power from within with our JDM Engine & Power - Engine Internals from HD Werks. Designed for high-performance and durability, these original aftermarket parts are engineered in Japan for racing excellence. Infused with DOHC precision and inspired by Honda and Toyota innovation, our engine internals deliver unmatched power and reliability. Shop our collection for components that ensure your engine performs optimally, enhancing efficiency and driving excitement. Experience the difference of superior craftsmanship and authentic JDM engineering.
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Vendor:FerreaFerrea Ford Big Block .235in Stem Dia Exhaust/Intake Valve Guides - Set of 8
Regular price $79.99Regular price$87.84-$7.85 Sale price $79.99 -
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Vendor:FerreaFerrea 84-98 Harley-Davidson Evolution Copper Bronze Intake Valve Guides - Set of 4
Regular price $39.99Regular price$43.92-$3.93 Sale price $39.99 -
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Vendor:FerreaFerrea 84-98 Harley-Davidson Evolution Copper Bronze Exhaust Valve Guides - Set of 4
Regular price $39.99Regular price$43.92-$3.93 Sale price $39.99 -
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Vendor:FerreaFerrea 84-98 Harley-Davidson Evolution Copper Bronze Intake Valve Guides - Set of 4
Regular price $39.99Regular price$43.92-$3.93 Sale price $39.99 -
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Vendor:FerreaFerrea 84-98 Harley-Davidson Evolution Copper Bronze Exhaust Valve Guides - Set of 4
Regular price $39.99Regular price$43.92-$3.93 Sale price $39.99 -
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Vendor:FerreaFerrea 05-08 Harley-Davidson Twin Cam 0.940/1.105 OD 0.580/0.742in ID Beehive Valve Springs-Set of 4
Regular price $86.99Regular price$95.72-$8.73 Sale price $86.99 -
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Vendor:FerreaFerrea 05-08 Harley-Davidson Twin Cam 1.100/1.445 OD .650/1.000in ID Beehive Valve Springs- Set of 4
Regular price $117.99Regular price$130.72-$12.73 Sale price $117.99 -
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Vendor:FerreaFerrea 05-08 Harley-Davidson Twin Cam 1.080/1.445 OD .650/1.000 ID Beehive Valve Springs - Set of 4
Regular price $86.99Regular price$95.72-$8.73 Sale price $86.99 -
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Vendor:FerreaFerrea 17-19 Can Am 1000R Twin Maverick 24.70mm OD 18.23mm ID Single Valve Springs - Set of 12
Regular price $224.99Regular price$249.48-$24.49 Sale price $224.99 -
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Vendor:FerreaFerrea 2018 Honda CRF250R 22.22mm OD 15.87mm ID Single Valve Springs - Set of 4
Regular price $87.99Regular price$96.80-$8.81 Sale price $87.99 -
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Vendor:FerreaFerrea 13-16 Honda CRF450 21.5mm OD 15.10mm ID Alloy Single Valve Springs - Set of 4
Regular price $87.99Regular price$96.80-$8.81 Sale price $87.99 -
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Ferrea 13-14 Can Am 1000R Twin Maverick 21.50mm OD 15.10mm ID Alloy Single Valve Springs - Set of 12
Regular price $261.99Regular price$290.40-$28.41 Sale price $261.99 -
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Vendor:FerreaFerrea 2014 Polaris RZR XP 1000 25.19mm OD 18.3mm ID Single Valve Springs - Set of 8
Regular price $174.99Regular price$193.60-$18.61 Sale price $174.99 -
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Vendor:FerreaFerrea 04-10 Honda CRF 250R 21.50mm OD 15.10mm ID Single Valve Springs - Set of 2
Regular price $43.99Regular price$48.40-$4.41 Sale price $43.99 -
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Vendor:FerreaFerrea 05-12 Can Am 800R Rotax Twin 18.23/25.19mm OD 13.4/18.23mm ID Dual Valve Springs - Set of 4
Regular price $121.99Regular price$134.80-$12.81 Sale price $121.99 -
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Vendor:FerreaFerrea 11-12 Polaris RZR XP900 19.05mm/25.30mm OD 13.95mm/19.05mm ID Dual Valve Springs - Set of 8
Regular price $242.99Regular price$269.60-$26.61 Sale price $242.99 -
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Vendor:FerreaFerrea 99-00 Suzuki GSX1300R 18.82mm/25.19mm OD 13.84mm/18.82mm ID Dual Valve Springs - Set of 16
Regular price $485.99Regular price$539.20-$53.21 Sale price $485.99 -
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Vendor:FerreaFerrea 04-10 Honda CRF 250R 18.10mm OD 11.50mm ID Single Valve Springs - Set of 2
Regular price $51.99Regular price$57.16-$5.17 Sale price $51.99 -
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Vendor:FerreaFerrea 04-10 Honda CRF 250R 18.50mm OD 13.0mm ID Single Valve Springs - Set of 2
Regular price $43.99Regular price$48.40-$4.41 Sale price $43.99 -
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Vendor:FerreaFerrea 01-08 Kawasaki KLX 250 20.32mm OD 14.23mm ID Single Valve Springs - Set of 4
Regular price $102.99Regular price$114.32-$11.33 Sale price $102.99 -
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Vendor:FerreaFerrea 03-09 Yamaha YZF450 5V 13.3mm ID 38lbs at 29.5mm Seat Press Single Valve Springs - Set of 5
Regular price $102.99Regular price$113.40-$10.41 Sale price $102.99 -
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Vendor:FerreaFerrea 04-05 Honda TRX 450 15.10mm ID 75lbs at 37mm Seat Pressure Single Valve Springs - Set of 4
Regular price $87.99Regular price$96.80-$8.81 Sale price $87.99 -
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Vendor:FerreaFerrea 06-09 Yamaha 700R Grizzly 13.84mm/18.82mm ID Dual Valve Springs - Set of 2
Regular price $60.99Regular price$67.40-$6.41 Sale price $60.99 -
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Vendor:FerreaFerrea 04-10 Honda CRF 250R 18.50mm OD 13.0mm ID Single Valve Springs - Set of 2
Regular price $43.99Regular price$48.40-$4.41 Sale price $43.99 -
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Vendor:FerreaFerrea 04-07 Honda CRF250R 18.10mm OD 11.50mm ID Single Valve Springs - Set of 2
Regular price $51.99Regular price$57.16-$5.17 Sale price $51.99 -
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Vendor:FerreaFerrea 84-98 Harley-Davidson Evolution 0.819/1.103in OD 0.625/0.819in ID Dual Valve Springs-Set of 4
Regular price $140.99Regular price$156.36-$15.37 Sale price $140.99 -
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Vendor:FerreaFerrea 04-10 Honda CRF 250R 21.50mm OD 15.10mm ID Single Valve Springs - Set of 2
Regular price $43.99Regular price$48.40-$4.41 Sale price $43.99 -
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Vendor:FerreaFerrea 02-03 Buell XB9 1.49in OD 1.076 ID Single Valve Springs - Set of 4
Regular price $89.99Regular price$99.60-$9.61 Sale price $89.99 -
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Vendor:FerreaFerrea 84-98 Harley-Davidson Evolution 1.005/1.440in OD .725/1.065in ID Dual Valve Springs-Set of 4
Regular price $72.99Regular price$80.16-$7.17 Sale price $72.99 -
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Vendor:FerreaFerrea 84-98 Harley-Davidson Evolution 1.025/1.550in OD 0.740/1.135in ID Dual Valve Springs-Set of 4
Regular price $119.99Regular price$133.16-$13.17 Sale price $119.99 -
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Vendor:FerreaFerrea 84-98 Harley-Davidson Evolution 1.005/1.530 OD .730/1.110in ID Dual Valve Springs - Set of 4
Regular price $72.99Regular price$80.16-$7.17 Sale price $72.99 -
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Vendor:FerreaFerrea Toyota G16E-GTS 5.5mm Radial Groove Steel Valve Locks - Set of 12 (Use w/E11152)
Regular price $79.99Regular price$88.80-$8.81 Sale price $79.99 -
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Vendor:FerreaFerrea 17-19 Can Am Maverick X3 Turbo 5mm Rad Grv 7 Deg Steel Valve Locks - Set of 12 (Use w/E11148)
Regular price $77.99Regular price$86.16-$8.17 Sale price $77.99 -
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Vendor:FerreaFerrea Arctic Cat / Kawasaki / Suzuki 7 Degree Steel Valve Locks - Set of 4
Regular price $49.99Regular price$55.32-$5.33 Sale price $49.99 -
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Vendor:FerreaFerrea Toyota 3SGTE Gen 3 6mm Radial Groove Steel Valve Locks - Set of 16 (Use w/E11123)
Regular price $106.99Regular price$118.40-$11.41 Sale price $106.99
