Nukeproof Reactor 290 Carbon Mountain Bike Frame

From concept through to design, the Kinematics, the geometry and specification; the Reactor is designed from the ground up to be the ultimate aggressive trail bike. It is at home on technical climbs, but happiest when thrashing the most technical trails you can point it at.

To optimise the weight, strength and stiffness, the Reactor Carbon frame features a full UD woven carbon fibre frameset (Including chain and seat stays). It is available for 27.5” or 29” wheel sizes. These are two totally different, compromise free frames that were designed and developed at the same time.  Each frame is simply tailored around each wheel size.

Speed or play: which do you value more? The manoeuvrability of 27.5” or the raw speed of a 29”?

All Reactor frames feature a “flip chip” to adjust the geometry from “Trail” to “Rail mode”.

• Trail ‚Äì As the name suggests, this setting is best suited for trail riding. It is for riders who get as much enjoyment from the climb as the descents
• Rail - The Rail setting turns the Reactor into a corner shredder, dropping the bottom bracket 6mm and slackening the head angle by half a degree. It is there to maximise the descending capabilities.

To ensure the bike could climb as well as it descends, we designed the 4 bar horst linkage to have higher levels of anti-squat for climbing gears but lower levels when you drop down the cassette. This means that the bike can behave itself on the climbs but when you get it up to speed, it turns into a trail hooligan. The combination of low anti-squat and progressive rate give ultimate small bump compliance (removes rough trail and root chatter) with good mid stroke support for cornering/pumping and end stroke progression for aggressive riding. Balanced anti-rise figures allow the Reactor some squat when braking hard, maintaining rider position and providing a good amount of pressure through the tyre to ensure traction. The Reactor is designed to reward the rider and ensure you get that stoke factor in on any ride.

Please Note: Due to severe delays in the bicycle supply chain, we have been forced to make some alterations to the specification of the component parts supplied with this bicycle. As a result the specification may differ from those shown in the images. Please refer to the specification table for accurate information.

FEATURES

• Aggressive Trail Bike
  
• Nukeproof UD woven Carbon Fibre frame
• 130mm Rear Travel¬†(*ST Model 125mm)
• 2 Position Trail/Rail Flip Chip,¬†Swinglink Driven 4 Bar¬†Horst Link Suspension, with custom tuned shock.
• 148mm Boost rear spacing
• Sizes Available: Medium, Large, Extra Large

Specs

 

 

	REACTOR 290 140MM FORK (CARBON)			REACTOR 290 150MM FORK (CARBON)			REACTOR 290C ST (130MM FORK)
	Medium	Large	X-Large	Medium	Large	X-Large	Medium	Large	X-Large
(A) REACH	451	480	514	446.3	475.4	509.5	460	488	521.6
(B) STACK	615	620	625	618.4	623.5	628.7	608	614	618
(C) EFFECTIVE TOP TUBE LENGTH	610	640	675	611.4	641.2	676.3	608	638	673
(D) SEATTUBE LENGTH	420	458	508	420	458	508	420	458	508
(E) EFFECTIVE SEATTUBE ANGLE	75.5° (Low 75°)	75.5° (Low 75°)	75.5° (Low 75°)	75.1° (Low 74.6°)	75.1° (Low 74.6°)	75.1° (Low 74.6°)	76.3° (Low 75.8°)	76.3° (Low 75.8°)	76.3° (Low 75.8°)
(F) SEATTUBE ANGLE (ACTUAL)	71° (Low 70.5°)	71° (Low 70.5°)	71° (Low 70.5°)	70.6° (Low 70.1°)	70.6° (Low 70.1°)	70.6° (Low 70.1°)	71.8° (Low 71.3°)	71.8° (Low 71.3°)	71.8° (Low 71.3°)
(G) SADDLE HEIGHT AT SADDLE OFFSET	-	-	-	-	-	-	-	-	-
(H) SADDLE OFFSET AT SADDLE HEIGHT (AT 30% SAG RT ONLY)	-	-	-	-	-	-	-	-	-
(I) HEADTUBE LENGTH	105	110	115	105	110	115	105	110	115
(J) HEADTUBE ANGLE	66° (Low 65.5)	66° (Low 65.5)	66° (Low 65.5)	65.5° (Low 65)	65.5° (Low 65)	65.5° (Low 65)	66.8° (Low 66.3)	66.8° (Low 66.3)	66.8° (Low 66.3)
(K) CHAINSTAY LENGTH	440	440	440	440	440	440	440	440	440
(L) FRONT CENTRE	762.5	792	830	766.5	796	834	755.5	785	823
(M) WHEELBASE	1205	1235	1271	1209	1239.1	1275.1	1198	1228	1264
(N) BOTTOM BRACKET DROP	-33 (Low -39)	-33 (Low -39)	-33 (Low -39)	-30 (Low -36)	-30 (Low -36)	-30 (Low -36)	-39 (Low -45)	-39 (Low -45)	-39 (Low -45)
(O) BOTTOM BRACKET HEIGHT	336 (Low 330)	336 (Low 330)	336 (Low 330)	336 (Low 330)	336 (Low 330)	336 (Low 330)	330 (Low 324)	330 (Low 324)	330 (Low 324)
(P) STAND OVER HEIGHT	736 (High)	744 (High)	769 (High)	739 (High)	747 (High)	772 (High)	730 (High)	738 (High)	763 (High)
(Q) FORK TRAVEL	140	140	140	150	150	150	130	130	130
(R) TRAIL	-	-	-	-	-	-	-	-	-
(S) FORK OFFSET	44	44	44	44	44	44	44	44	44
(T) AXLE TO CROWN 	554	554	554	564	564	564	537	537	537
(U) MAXIMUM SEATPOST INSERT	215	250	300	215	250	300	215	250	300

*All dimensions in mm unless otherwise stated

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