Nukeproof Reactor 275 Alloy Pro 2021
2021 Mountain
Estimate price |
5,012$
Weight | 14.1 kg 
Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Carbon -
Wheels 27.5" -
Travel Front 150mm -
Travel Rear 140mm -
Fork RockShox Pike Select
-
Groupset GX Eagle -
Suspension Full -
Drivetrain 1 × 12 -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
SM
158cm - 171cm
MD
168cm - 180cm
LG
178cm - 189cm
XL
186cm - 199cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Nukeproof Reactor 275 Alloy, 140mm Travel, custom triple butted hydro-formed tube set for front triangle and chain stays, UD woven carbon fibre Seat stays, internal cable routing, internal cable routing, ISCG 05 mount, Enduro bearings, threaded 73mm BB, Boost 148mm rear axle spacing, 3D contoured rubber frame protection.
Suspension Fork
RockShox Pike Select + Charger 2 RC 150mm, 46mm Offset, BOOST, Debonair, Gloss Black
Rear Shock
RockShox Super Deluxe Select+ RT, Custom ML 320 tune, 210x55mm, Bearing End, 1x bottomless token fitted.
Drivetrain
Rear Derailleur
SRAM GX Eagle 12-Speed
Shift Levers
SRAM GX Eagle 12-Speed
Cassette
SRAM GX Eagle 12-Speed, CS XG1275 EAGLE 10-52T
Crank
SRAM GX Eagle 12-Speed, 170mm, 32T, B148, DUB
Bottom Bracket
BSA, 73mm, threaded
Chain
SRAM GX Eagle 12-Speed
Wheels
Rims
Nukeproof Neutron V2 27.5", Tubeless Ready, 32h, 110x15mm
Tires
Front: Maxxis Assegai 27.5”x2.5 WT 3C MaxxTerra/EXO+/TR, Rear: Maxxis Dissector 27.5”x2.4 WT 3C MaxxTerra/EXO+/TR
Brakes
Brakes
SRAM Guide RE
Cockpit
Stem
Nukeproof Neutron AM, 45mm, black
Handlebar
Nukeproof Horizon V2 25mm Rise, Width - M780mm, L800mm, XL800mm)
Grips
Nukeproof Sam Hill Signature
Headset
Nukeproof, 44-56 IITS
Seat
Saddle
Nukeproof Horizon SL, Black
Seatpost
Brand X Ascend internal, 31.6mm, S:125mm; M:150mm drop; L/XL: 170mm Drop
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | SM | MD | LG | XL |
|---|---|---|---|---|
| Stack Reach Ratio | 1.41 mm | 1.33 mm | 1.26 mm | 1.19 mm |
| Bottom Bracket Height | 336 mm | 336 mm | 336 mm | 336 mm |
| Front Center | 728 mm | 759 mm | 790 mm | 825 mm |
| Rake | 46 mm | 46 mm | 46 mm | 46 mm |
| Trail | 110.73 mm | 110.73 mm | 110.73 mm | 110.73 mm |
| Stack | 598 mm | 603 mm | 607 mm | 611.5 mm |
| Reach | 423 mm | 452 mm | 480.5 mm | 514 mm |
| Top Tube Length | 578 mm | 608 mm | 638 mm | 673 mm |
| Seat Tube Angle | 75.5 ° | 75.5 ° | 75.5 ° | 75.5 ° |
| Seat Tube Length | 381 mm | 420 mm | 458 mm | 508 mm |
| Head Tube Angle | 66 ° | 66 ° | 66 ° | 66 ° |
| Head Tube Length | 110 mm | 115 mm | 120 mm | 125 mm |
| Chainstay Length | 428 mm | 428 mm | 428 mm | 428 mm |
| Wheelbase | 1148 mm | 1179 mm | 1210 mm | 1245 mm |
| Bottom Bracket Drop | -18 mm | -18 mm | -18 mm | -18 mm |
| Standover Height | 721 mm | 719 mm | 720 mm | 723 mm |
| Front Travel | 150 mm | 150 mm | 150 mm | 150 mm |
| Wheels | 27" | 27" | 27" | 27" |
| Rider Min Height | 158 cm | 168 cm | 178 cm | 186 cm |
| Rider Max Height | 171 cm | 180 cm | 189 cm | 199 cm |
About this model
Reactor 275 Alloy Pro belongs to the Nukeproof Reactor model. 61 bikes variations carry this model name so far. You can get a glimpse at all models from 2021, by clicking on this link.
Model range prices
The most economical model, the Nukeproof Reactor 275 Alloy Comp 2021 has a starting price of 3648$. Nukeproof Reactor 275 Carbon RS 2021 on the other hand is the most expensive at 7297$.
Safety
When you go for a ride, don’t forget to put your helmet on. Moreover, ride with traffic, not against it. This will help you stay visible to drivers and also makes it easier for them to see you.
Average price for Trail bikes
Our math shows that the average cost of a dependable Trail bike is 2762$. However, you could also get a good Trail bike even if you pay a lower amount than the average price. To make sure you don’t pay a higher amount than normal for your bike, always do some components analysis and read reviews.
At the moment of the release date, Nukeproof Reactor 275 Alloy Pro price was 4499$. Comparing the average cost of a Trail bike to this one, you will see that Reactor 275 Alloy Pro price is 62.89% higher.
Trail bikes average weight
If we make a quick analysis of the average weight of a Trail bike, we get 12.98 kg (28.62 lbs). You will have a greater advantage on climbs if your bike is easier than the average. On descents, however, a heavier bike will give you extra speed.
Reactor 275 Alloy Pro weighs 14.1 kg (31.09 lbs) and is a bit heavier than the average. In conclusion, the average Trail bike weighs 8.63% less than Reactor 275 Alloy Pro.
Internal Cable Routing
It’s also important to mention the internal cable routing that this bike has. In short, this will allow you to keep your bike cables in great condition. Say goodbye to hanging cables.
Overview of components
Fork
The RockShox Pike Select is included from the factory. It has a travel distance of 150mm. Bike forks absorb the shocks and give you a smooth and pleasant ride. In conclusion, always look for a fork with decent travel when you buy a bike.
Rear Shock
The Reactor 275 Alloy Pro has a rear shock with a travel of 140mm. The model RockShox Super Deluxe Select+ RT is the one installed in this bike. Bike rear shocks are a great way to increase comfort on the bike and give you more control when riding on technical trails. In short, if you want smooth rides, get a full-suspension bicycle.
Wheels
The wheels on Reactor 275 Alloy Pro are the 27.5″ aluminum type. These wheels will provide you with more control over the bike. However, the 27.5″ wheels are less forgiving than the 29″ wheels.
Brakes
When you want to stop the bike in time, the brakes are vital. The Reactor 275 Alloy Pro has Hydraulic Disc brakes. Hydraulic disc brakes provide amazing stopping power, no matter what the terrain. To sum up, you can ride your bike with confidence.
Sizes
Reactor 275 Alloy Pro comes in 4 sizes, that range from 158 cm – 199 cm (5.18 ft – 6.53 ft). In conclusion, you won’t have a problem finding one that suits you.
Dropper post
The Nukeproof model is also equipped with a dropper post. If used correctly, a dropper post gives you more faith, maneuverability, and greater control over your bike.