Starting At:
🚚 This bike ships FREE in the continental US!* (Flat-rate shipping to addresses in AK, HI, or PR is $250)
🏷️ Not eligible for coupons
The Following SID Ultimate combines the precision and efficiency of SID Ultimate suspension with the unstoppable traction and daring geometry of the Following LS. This is Evil’s lightest bike yet, crafted for raw speed without losing an ounce of the brand's bold character. Lightweight components and a full-carbon frame deliver a dynamic and responsive ride, perfect for riders who crave Evil-level confidence and control in a lean, mean XC-inspired package.
Evil Following SID Ultimate
Available Build Kits
SRAM GX
| Headset: | Cane Creek 40 Series ZS Integrated Tapered Headset - Cups: ZS44/28.6 (Upper) and ZS62/40(Lower) |
| Headset Spacers: | Alloy Spacers, 5mm |
| Fork: | RockShox SID Ultimate 2P Remote Fork - 29 - 120mm |
| Handlebar: | Evil Boomstick Carbon Bar - L/XL - 810mm, S/M - 780mm x 35mm |
| Stem: | Evil 12 Gauge Stem - 45mm |
| Grips: | Evil Palmela Handerson, lock-on |
| Brakes: | Level Silver Stealth 4-Piston |
| Brake Rotors: | SRAM Centerline X - 180mm |
| Shifter: | SRAM GX Eagle, 12spd |
| Derailleur: | SRAM GX Eagle, 12spd |
| Cassette: | SRAM XG-1275-B1 Eagle, 10-52T |
| Chain: | SRAM GX Eagle w/Powerlock |
| Crankset: | SRAM GX Eagle DUB, SUPERBOOST+, 170mm Direct Mount 32t, 56.5mm Chainline, Lunar |
| Bottom Bracket: | SRAM DUB, 73mm BSA |
| Wheels: | Industry Nine Trail S Hydra, Internal Width: 30.5mm (Optional Carbon Wheel upgrades available.) |
| Tires: | Front - Schwalbe Nobby Nic Evo SG TLE, Rear - Schwalbe Wicked Will Evo ST TLE |
| Sealant: | Stan's No Tubes Tubeless Sealant |
| Seatpost: | Bike Yoke Revive 2.0 Dropper Seatpost - 30.9mm S: 125mm, M: 150mm, L/XL: 185mm |
| Saddle: | WTB Volt Pro - Medium |
SRAM X0 Eagle T-Type
| Headset: | Cane Creek 40 Series ZS Integrated Tapered Headset - Cups: ZS44/28.6 (Upper) and ZS62/40(Lower) |
| Headset Spacers: | Alloy Spacers, 5mm |
| Fork: | RockShox SID Ultimate 2P Lever Fork - 29 - 120mm |
| Handlebar: | Evil Boomstick Carbon Bar - L/XL - 810mm, S/M - 780mm x 35mm |
| Stem: | Evil 12 Gauge Stem - 45mm |
| Grips: | Evil Palmela Handerson, lock-on |
| Brakes: | SRAM Code RSC |
| Brake Rotors: | SRAM Centerline X - 180mm |
| Shifter: | SRAM AXS Pod Controller |
| Derailleur: | SRAM X0 Eagle AXS, 12spd |
| Cassette: | SRAM X0 Eagle Transmission Cassette, 10-52T |
| Chain: | SRAM X0 Eagle Transmission Flat Top Chain w/Powerlock |
| Crankset: | SRAM X0 Eagle Crankset, DUB, 170mm, Direct Mount 32t, 55mm Chainline, Aluminum |
| Bottom Bracket: | SRAM DUB, 73mm BSA |
| Wheels: | Industry Nine Trail S Hydra, Internal rim width: 30.5mm (Optional Carbon Wheel upgrades available.) |
| Tires: | Front - Schwalbe Nobby Nic Evo SG TLE, Rear - Schwalbe Wicked Will Evo ST TLE |
| Sealant: | Stan's No Tubes Tubeless Sealant |
| Seatpost: | Bike Yoke Revive 2.0, S: 125mm, M: 150mm, L/XL:185mm |
| Saddle: | WTB Volt Pro - Medium |
SRAM XX Eagle T-Type
| Headset: | Cane Creek 110 Series Evil MTB Headset, eeNut top cap |
| Headset Spacers: | Alloy Spacers, 5mm, black |
| Fork: | RockShox SID Ultimate 2P Remote Fork - 29 - 120mm (Optional Flight Attendant upgrade available.) |
| Handlebar: | Enve M6 Handlebar - 780x31.8 |
| Stem: | Enve M6 Stem - 50mm |
| Grips: | Rockshox TwistLoc Ultimate - Curved Hose |
| Brakes: | SRAM Level Ultimate Stealth 4-Piston |
| Brake Rotors: | SRAM Centerline X - 180mm |
| Shifter: | SRAM XX SL Pod Controller |
| Derailleur: | SRAM XX Eagle T-Type, 12spd |
| Cassette: | SRAM XX SL Eagle Transmission Cassette, 10-52T |
| Chain: | SRAM XX SL AXS T-Type |
| Crankset: | SRAM XX SL Eagle, DUB, 170mm, Direct Mount 32t, 55mm chainline |
| Bottom Bracket: | SRAM DUB, 73mm BSA |
| Wheels: | Industry Nine UL300 Carbon |
| Tires: | Front - WTB Ranger Light/Fast Rolling TCS 29x2.25, Rear - WTB Ranger Light/Fast Rolling TCS 29x2.25 |
| Sealant: | Stan's No Tubes Tubeless Sealant |
| Seatpost: | Bike Yoke Revive 2.0, S:125mm, M: 150mm, L/XL:185mm (Upgraded to SRAM Reverb AXS 125mm with Flight Attendant model.) |
| Saddle: | WTB SL8 Titanium Saddle - Medium |
| Misc: | Titanium Bolts - Everywhere |
Frameset
| Available Sizes: | Small, Medium, Large, X-Large |
| Available Colors: | Blackout, Foam Roller |
| Wheel Travel: | 121mm |
| Rear Shock: | Rockshox SIDLuxe Ultimate 165X45 S0 R57C25 X8TS A2 |
| Shock Hardware: | Trunnion Upper, 20x8mm Lower |
| Fork Axle to Crown: | 531mm, Rockshox SID 120mm |
| Fork Offset: | 44mm |
| Headtube: | Tapered 1 1/8” – 1 1/2” |
| Headset: | Cane Creek 40 Series IS42 - IS52 , Upper ZS/44 Lower ZS/62mm Tapered OD |
| Seatpost Diameter: | 30.9mm |
| Seatclamp Diameter: | 34.9mm |
| Wheel Diameter: | 29” |
| Maximum Rear Tire Size: | 29 x 2.6” (varies by brand) |
| Bottom Bracket Shell: | 73mm Threaded |
| Chainline: | 55mm - 56.5mm |
| Chainguide Mount: | Evil Chain Guide Upper, ISCG05 Lower |
| Maximum Chainring Size: | 36T Single Ring |
| Minimum Chainring Size: | 30T |
| Rear Wheel Spacing: | 157mm x 12mm |
| Derailleur Hanger: | SRAM Universal Derailleur Hanger |
| Rear Brake Mount Type: | Post Mount 180mm |
| Maximum Rear Rotor Size: | 203mm |
| Warranty: | Lifetime |
*Exact bike specifications are subject to change without notice. Please contact us with questions!
Bicycles pictured may not represent the actual bike being sold.
Please reach out to us with any questions you may have on anything we sell. We want to make sure you get the right items the first time. Our lifelong riders at Thunder Mountain Bikes are knowledgeable and would love to talk to you!
Shipping
We currently offer both economy and expedited shipping options though FedEX and USPS.
Orders totaling over $59 are eligible to ship for free via an economy ground option of our choice.
Most bikes ship free within the continental US. Bike shipping to AK, HI, or PR is $250.
If you're in need of something super-quick, please contact us directly. We may be able to overnight your order with an additional fee and depending on your location.
RETURNS
Should there be an issue with the item you bought, or you no longer need your purchase, we will be happy to set up a return.
Component & Gear Returns
Returns may be requested within sixty (60) days of the delivery date. All returned items must be received in new, unused, and uninstalled condition, with the original tags and labels attached and in the original packaging. We cannot accept returns on any items installed or show wear of any kind.
Bike Returns
Returns or exchange requests for bikes must be requested by emailing us at sedona@thundermountainbikes.com within fifteen (15) days from the date of delivery. Bikes must be in un-ridden condition. Custom-built bikes may not be returned. Returned bikes have a $200 restocking fee and the customer pays for return shipping.
Return Shipping
Customers may choose to use our provided flat-rate return shipping label at $9, or choose a carrier of their choice to handle their product return.
The $9 flat rate label will be deducted from the refund issued for the return. You can either print this label after requesting a return from the Order History in your Account profile, or you can request that we email you the label.
For all other return shipping methods, please email us at sedona@thundermountainbikes.com after submitting your return request so that we can confirm the shipping information you should use to return your item(s).
REFUNDS
We will process your return after we receive your returned item(s) and inspect the condition. Please allow at least seven (7) days from the receipt of your item to process your refund. We will notify you by email when your return has been processed.
EXCEPTIONS
If you receive defective or damaged products or if we sent you the wrong products, please contact us using the phone number or email below.
RETURN PROCESS
To request a return, please log in to your customer account by clicking the 
Profile icon in the top right of any page or visit account.thundermountainbikes.com.
1. In the Email field, enter your email address and click Continue.
2. In your email account, open the email sent from our store and copy the six-digit verification code included in the email.
3. Go back to the online store and enter a six-digit verification code to log in.
4. Find and click on the order that you want to submit a return for.
5. If your order has more than one item, select only the items you want to return.
6. Select a return reason and add a note for the store if needed.
7. Click Request Return.
Once your return request is approved, you will receive an email with shipping instructions and a return shipping label.
QUESTIONS ABOUT RETURNS?
If you have any questions concerning our return policy, please contact us at:
