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Today’s DealsDefine 170 AL 2
A 27.5″ aluminum frame full suspension enduro bike with upper mid-range components.
Compare the full range
| Weight | 15.8 kg |
|---|---|
| Frame | Aluminum |
| Suspension | Full, 170 / 180mm |
| Fork | RockShox ZEB |
| Shock | X-Fusion |
| Wheels | 27.5″ Aluminum |
| Drivetrain | 1 × 12 |
| Groupset | Deore |
| Brakes | Shimano Hydraulic Disc |
| Seatpost | Dropper |
158cm – 170cm
168cm – 179cm
176cm – 187cm
🐐 Estimated
None yet.
Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.

Aug 2021 · Paul Burwell
NS Bikes Define AL 170 is a big-hitting aluminium enduro bike with 180mm front and 170mm rear travelMullet wheels mix a 29in front and 27.5in rear.
Modern geometry and sizing. Excellent suspension components and tyres. Recessed cabling looks sleek but without the hassle of proper internal routing.
Rides like a shorter-travel bike.

Apr 2021 · NS Bikes
We selfishly made the Define 170 for the riding we most enjoy. It is perfect for big jumps and severe terrain, and it is happy on the uphills, too. It is the most aggressive bike in the Define range, but one that is still fun to ride everywhere. Enduro, freeride, bike park ripper, call it what you like – at NS, a company of riders, we have fallen in love with this beast.

Sept 2020 · September 2, 2020
To begin with, was there ever really any doubt from the brand who originally put themselves on the map for creating amazing dirt jump hardtails that their latest enduro rig wasn’t going to be one of the most playful bikes of 2020? That’s pretty much it in a ‘nutshell’ really! NS’s range of longer travel bikes haven’t been available over here in Oz for very long now, but they have been knocking out awesome bikes based off of their DJ/freeride roots […]

Jul 2020 · Cory Benson
NS Bikes redefines their adaptable all-mountain trail to enduro 29er mountain bike platform with a new Define AL, with more travel & Mullet wheel options...

May 2020 · Robin Weaver
The Define 150 AL is packed full of promise and has great geometry. It’s not quite as comfy as some and the spec does fall a little short in places
Great geometry
Confident feel to the rear suspension
Functional spec that’ll do the job
Niggling issues with some elements of the spec
Not the comfiest ride on really rough descents
| Frame | Aluminum BB Standard: BSA, 73mm, Threaded |
|---|---|
| Fork | RockShox ZEB, 44mm offset Travel: 180mm Spring Type: Air |
| Shock | X-Fusion Vector R, trunnion mount, 225mm x 70mm, Spring rates: 350lbs (SM), 400lbs (MD), 450lbs (LG) Travel: 170mm |
| Bottom Bracket | Shimano, 73mm English/BSA threaded |
| Headset | GW, integrated tapered, IS42 upper, IS52 lower, sealed bearings |
| Stem | NS Tone, 45mm length, 35mm bar clamp |
| Handlebar | NS, 800mm width, 20mm rise, 35mm clamp diameter |
| Saddle | Octane One Rocket2, hollow CrMo rails |
| Seatpost | X-Fusion Manic dropper, Drop: 125mm (SM), 150mm (MD), 170mm (LG) Type: Dropper |
| Pedals | None |
| Grips | NS Hold Fast |
| Rear Derailleur | Shimano Deore M6100, 12-speed |
|---|---|
| Front Derailleur | None |
| Crank | Shimano Deore MT5101, 170mm length |
| Shifters | Shimano Deore M6100, 12-speed |
| Cassette | SunRace CSMZ800, 12-speed, 11-51 tooth |
| Chain | Shimano, 12-speed |
| Chain Guide | None |
| Brakes | Shimano MT420, 4-piston, 200mm rotors Type: Shimano Hydraulic Disc |
| Brake Levers | Shimano MT420 |
| Rims | Octane One Solar, 32 hole, tubeless compatible |
|---|---|
| Spokes | 14mm nipples |
| Front Hub | NS, sealed bearings, 110x15mm Boost front, 148x12mm Boost rear with HG driver |
| Rear Hub | NS, sealed bearings, 110x15mm Boost front, 148x12mm Boost rear with HG driver |
| Tires | Schwalbe Big Betty, BikePark, 2.4" |
First added 4 May
Last updated 4 May
Not listed for 1,851 days