Intake only valve springs sold as a pair for 2017-2022 CRF 450
We have spent hours testing our valve springs to find the right amount of spring pressure and control using only the highest quality spring wire. Developed by working closely with top-level professional race teams, these high quality valve springs will outlast stock intake valve springs and won't lose tension under extreme heat or rpm. We recommend installing these valve springs with our 2017-2020 CRF 450 Camshaft.
Shipping
We offer free freight for online orders over $75.00 in the USA (Excluding AK & HI) Online orders only.
For International orders:
All orders will be shipped with an original invoice on the box, which shows the full amount that you paid for the products you have purchased. This will ensure that your package processes through customs with no delays. Some countries have import tax laws, in which case you would be liable to pay import tax on the items you buy from us. Please do your best to educate and familiarize yourself with these policies in your country. You may be responsible for paying these fees once you have received the package.
Returns
We want you to be happy with your XPR products and offer returns on orders 30 days after they are shipped. If for any reason, you're not happy with your purchase contact us.
Frequently Asked Questions
Let customers speak for us
Excellent work very impressive and very informative and helpful before and after sale I’ve used other companies that claim they can do good things but Chad is hands down the best in my opinion
I love it, torque map has been my go too. Thanks for all the help you and Chad have provided me!
I had Chad remap my vortex for my 23 crf250 , it runs much cleaner and pulls longer on top now Im waiting for winter , going to see what xpr can do to the motor ??
I had Chad remap my vortex for my 23 crf250 , it runs much cleaner and pulls longer on top now Im waiting for winter , going to see what xpr can do to the motor ??
I had Chad remap my vortex for my 23 crf250 , it runs much cleaner and pulls longer on top now Im waiting for winter , going to see what xpr can do to the motor ??
I had Chad remap my vortex for my 23 crf250 , it runs much cleaner and pulls longer on top now Im waiting for winter , going to see what xpr can do to the motor ??
I had Chad remap my vortex for my 23 crf250 , it runs much cleaner and pulls longer on top now Im waiting for winter , going to see what xpr can do to the motor ??
I had Chad remap my vortex for my 23 crf250 , it runs much cleaner and pulls longer on top now Im waiting for winter , going to see what xpr can do to the motor ??
I had Chad remap my vortex for my 23 crf250 , it runs much cleaner and pulls longer on top now Im waiting for winter , going to see what xpr can do to the motor ??
I had Chad remap my vortex for my 23 crf250 , it runs much cleaner and pulls longer on top now Im waiting for winter , going to see what xpr can do to the motor ??
I had Chad remap my vortex for my 23 crf250 , it runs much cleaner and pulls longer on top now Im waiting for winter , going to see what xpr can do to the motor ??
I had Chad remap my vortex for my 23 crf250 , it runs much cleaner and pulls longer on top now Im waiting for winter , going to see what xpr can do to the motor ??
Just completed Mammoth and bike ran great with no issues. All maps especially high altitude where can be challenging for most. This ECU was on point.
Switched to a XPR tuned ECU on my Yamaha, so will lose my maintenance time off the app. Found out this hour meter has that option!
Great customer service from Chad and all his staff at XPR.
Vortex is a great add for this bike