ORO2U Dirt Catalogue - Section E - Engine and Performance.

Hotcams

Camshafts

As the leader in innovation, design and development of aftermarket dirt bike and ATV high-performance camshafts, a set of Hot Cams is certain to give the added power gains that dirt bike and ATV enthusiasts are looking for. CNC crafted from billet steel and with multiple stages to choose from for many applications, Hot Cams delivers the performance and feel of a custom cam for a fraction of the price. Ease of installation is also a big benefit when it comes to Hot Cams, as nearly all cams require no additional machine work and utilize the stock valve springs. And, as has always been the policy at Hot Cams, you can keep your original cams as a core exchange is never required.

Hot Cams Performance Camshaft Designed, dyno-proven and made in the USA, Hot Cams performance camshafts are one of the most economical, reliable and easy to install ways to add a 5-10 percent power gain to an engine. Additionally, every Hot Cams camshaft is:

• CNC machined for an exact fit and lobe profile. • Created from 8620, billet, case-hardened steel.

• Engineered by utilizing state-of-the-art valvetrain software. • Engineered to be drop-in cams that use stock valve springs.

Intake

Exhaust

KTM

Lift Duration

Lift Duration

Models 250 SX-F, 250 XC-F

Years Hot Cam

(mm) (@ 1mm) (mm) (@ 1mm) Part No

Intake Cam. Stage 1. Excellent low end to midrange gains. *1 Exhaust Cam. Stage 1. Excellent low end to midrange gains. *1

10.77 243.75°

56-C334.IN.STG1 56-C334.EX.STG1

2013 - 15

10.46 241.5°

Intake Cam. Stage 1. Gains all the way to 11,000 RPM with slight loss 11,000 RPM to rev limiter: Designed with Improved Throttle Response (I.T.R.) technology. *1 10.86 Intake Cam. Stage 2. Cam is equal to stock up to 8,200 RPM then gains up to rev limiter: Designed with Improved Throttle Response (I.T.R.) technology. *1 11.63

242°

56-C154.STG1

250 SX-F, 250 XC-F

2016 - 22, 2016 - 22

253°

56-C154.STG2

Exhaust Cam. Stage 1&2. For use with both Stage 1 and Stage 2 intake cams: See intake performance description for gains: Designed with Improved Throttle Response (I.T.R.) technology. *1 Intake Cam. Stage 1. Excellent low-end to mid-range gains: Works best with stock exhaust cam: Designed with Improved Throttle Response (I.T.R.) technology. *1 Stage 1. Excellent mid-range and top-end power increase: Works best with big-bore kits. *2,*8 Stage 1. Excellent mid-range and top-end power increase: Works best with big-bore kits. *2,*8 Stage 1. Excellent mid-range and top-end power increase: Works best with big-bore kits. *2,*8 Stage 1. Excellent mid-range and top-end power increase: Works best with big-bore kits. *2,*8 Stage 1. Excellent mid-range and top-end power increase: Works best with big-bore kits. *2,*8 Stage 1. Excellent mid-range and top-end power increase: Works best with big-bore kits. *2,*8 Stage 1. Excellent mid-range and top-end power increase: Works best with big-bore kits. *2,*8 Stage 1. Excellent mid-range and top-end power increase: Works best with big-bore kits. *2,*8 Stage 1. Excellent mid-range and top-end power increase: Works best with big-bore kits. *2,*8

10.51 238.30 56-C154.EXH

350 SX-F, 3350 XC-F

2011 - 15

11.43 252.5°

56-C335.IN.STG1

520 EXC

2000 - 02

10.8

271°

10.2

261°

56-C308

520 MXC

2000 - 02

10.8

271°

10.2

261°

56-C308

520 SX

2000 - 02

10.8

271°

10.2

261°

56-C308

525 EXC

2007

10.8

271°

10.2

261°

56-C308

525 EXC-G 2003 - 06

10.8

271°

10.2

261°

56-C308

525 MXC-G 2003 - 05

10.8

271°

10.2

261°

56-C308

525 SMR

2004 - 05

10.8

271°

10.2

261°

56-C308

525 SX

2003 - 06

10.8

271°

10.2

261°

56-C308

525 XC

2007

10.8

271°

10.2

261°

56-C308

*1: Uses stock valve springs. *2: Uses stock valve springs & rockers. *3: Shim kits available.

*4: Cam sold in front & rear sets. *5: Cam specs taken at lifter. *6: Includes adjustable cam timing sprockets.

*7: Auto-decompressor on exhaust cam. *8: Uses stock auto-decompressor mechanism.

*Please visit our website for current prices E203b

E-mail: sales@oro2u.com

www.oro2u.com

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