WHAT A BIKE - The Sour Crumble Review - A 4130 Steel Hardtail from Germany

The Sour Crumble is a modern 4130 steel trail hardtail from SOUR bicycles out of Germany. Today we take it out on the trails to see what it's made of. Is it more of an xc bike? An enduro race bike? A trail bike? Today we find out. Products in this video: Sour Crumble Frame: https://bit.ly/3oRA7E0 Frozen Grips: https://bit.ly/3r3fdoi Roost Titanium Riser Bars WITH A DISCOUNT!: roostbike.com/hardtailparty Roost Dominator Ti Stem: https://bit.ly/32r7Yfz Roost Nero Pedals: https://bit.ly/3HPkk15 Ignite Catalyst Cranks: https://bit.ly/3oMkNsk Do you need help choosing your next bike? Become a patron today for one-on-one bike consultation: patreon.com/hardtailparty. Gear I use and love: 20% off all Club Ride Apparel using code "hardtailparty20" - https://bit.ly/3zrnyUS 5% off 5DEV cranks - Use coupon code "hardtailparty" here: https://bit.ly/3c5Ha6b Hardtail Party Shirts, hats, and SWAG - shop.spreadshirt.com/hardtailparty Lab Austere hip pack: https://bit.ly/3p37K58 - code "Hardtail.Party" 25% off Handup Gloves: https://bit.ly/3dhUe8z - use discount code "HARDTAILPARTY" My shop tools: https://www.amazon.com/shop/hardtailp... My glasses (use code "hardtail10"): https://bit.ly/3aXBeKp My tire sealant: https://bit.ly/2ULJirZ My favorite grips: https://bit.ly/3mYRL8Z Hardtail Party collection by pedal industries - code "HARDTAILPARTY": https://bit.ly/3ilNdqH What's in my water bottles (Tailwind): https://bit.ly/2Xbxy3q My hooded sun shirt: https://bit.ly/38NdU1x Milwaukee Inflator. I love this thing! https://amzn.to/38Vdqrj Presta adapter: https://amzn.to/3cMADx1 5% off all RSD bikes using code "party" - https://bit.ly/3dj2nZP - Ryan Leech Connection: $19 off - coupon code "hardtailparty"​ - https://bit.ly/2UwrmQq https://amazon.com/shop/hardtailparty any time you shop on amazon using this link, it helps me. Note: some of my links are affiliate links. That means I get a small commission on purchases made using these links. You don't pay anything extra, but it helps support the channel. If you've learned something from my videos, consider using the affiliate links above.