Beta RR 4T 480 Enduro

 

 

 

Make Model

Beta RR 4T 480 Enduro

Year

2015

Engine

Four stroke, single cylinder with countershaft, DOHC, 4 valve

Capacity

477.5 cc / 29.1 cu in

Bore x Stroke

100 x 60.8 mm

Compression Ratio

12.1:1

Lubrication

Forced, 2 oil pumps

Engine Oil

SAE 10W/50

Engine Oil Capacity

0.8 L / 0.2 US gal

Cooling System

Liquid cooled, forced by pump

Induction

Keihin FCR-MX39

Ignition

AC-CDI, Kokusan

Spark Plug

NGK LKAR 8A-9

Starting

Electric and kick

Clutch

Wet multi-disc

Transmission

6 Speed

Final Drive

Chain

Primary Drive

31:73

Frame

Molybdenum steel with double cradle split above exhaust port. Air filter access from the side

Front Suspension

48 mm Ψ Sachs USD fork, adjustable compression and rebound, TFX technology

Front Wheel Travel

290 mm / 11.4 in

Rear Suspension

Sachs shock w/adjustable rebound and hi/low speed compression

Rear Wheel Travel

290 mm / 11.4 in

Front Brakes

Single wave Ψ 260 mm floating disc, 2 piston floating caliper

Rear Brakes

Single Ψ 240 mm disc,  1 piston floating caliper

Front Wheel

1.60 x 21

Rear Wheel

2.15 x 18

Front Tyre

90/90 -21

Rear Tyre

140/80 -18

Dimensions

Length: 2180 mm / 85.8 in

Width:     807 mm / 31.8 in

Height:  1270 mm / 50.0 in

Wheelbase

1490 mm / 58.7 in

Seat Height

940 mm / 37.0

Ground Clearance

320 mm / 12.6 in

Footrest Height

413 mm / 16.3 in

Dry Weight

112,5 kg  /  248 lb

Fuel Capacity 

8.0 L / 2.1 US gal

Fuel Reserve

1.3 L / 0.3 US gal

The whole range is equipped with engines that have been completely renewed, both in terms of looks and performance. The total weight has been reduced by 1kg on the 430 and 480 engines, compared with the previous 450 and 498, and by as much as 1.5kg for the 350 (derived directly from the 2014 factory model) and the 390 (which will replace the 400). The central guards have been completely redesigned, made lighter and modified internally to house a new oil-pump drive system, which is simpler and more effective thanks to elimination of a drive gear. The flywheel chamber has been redesigned in order to minimise pumping losses, and the entire shape has been reworked thanks to the introduction of ribs that stiffen the engine block. The covers, clutch and flywheel have also been modified with a view to reducing weight and, at the same time, increasing the rigidity of the parts themselves.

The crankshafts have new shoulders and a new con rod, lighter and with optimised inertia, making the bike quicker to deliver power and more agile thanks to a reduction of the gyroscopic effect.

More specifically, the con rods are shorter and lighter, and feature a new design. The redesign is aimed at reducing the alternating masses and the size of the engines. The 390-430-480 cc engines, in fact, have the entire combustion unit positioned lower down compared to the previous models. This means that masses are more compact and closer to the centre of gravity, significantly improving the bike’s agility.

The piston is lighter and more robust, thanks to a structure derived from Formula 1 called “box-in-box”, which enables a reduction in vibrations and an increase in performance. The gudgeon pin is coated with a Diamond-Like-Carbon (DLC) treatment to minimise friction and wear.

The camshafts were developed with a new profile to boost performance, especially at low speeds, and to provide greater linearity of output. On the 350 and 390 version has been adopted a complete set of titanium valves.

The cylinder features a new design for the water jacket to improve the removal of heat and increase the efficiency of the whole cooling system. The head has been completely redesigned both in terms of the conduits and combustion chamber, in relation to the needs of the new engine sizes, and externally.

The starter motor has been significantly improved and is more powerful and lighter compared with the previous models. The balance shaft has been completely redesigned in relation to the different balancing of the primary masses of the crankshaft unit; the result, also here, is a significant reduction in weight. The intake sleeve has been completely redesigned for the new engine sizes to guarantee better fuel supply, optimal filling of the engine and therefore a better yield, particularly at low rotation speeds.

Key features:

• Die-Cast Engine cases (2.2 lbs. lighter)
• All new displacements for optimum performance and handling
• New crankshaft, connecting rod, cylinder head, and piston
• Beta’s ETR(Easy-To-Ride) Engine
• New front fork compression piston to improve oil flow and reduce harshness
• New rear shock piston to reduce heat
• Handlebar pad from Race Edition
• New design seat foam that is softer
• New graphics and color scheme
• Full-Function Meter with Adjustable Trip Meter
• Push-Button Seat Release
• Beta-Built 4-Stroke with Electric Start
• Aluminum Skid Plate
• Complete Light Package
• Back-Up Kick Starter
• Rear Suspension Linkage
• Strongest Wheels in the Industry
• Softer Seat Foam
• Available in a 350 EFI, 390, 430, and 480cc
• 6-Speed Wide Ratio Transmission
• Electric/Kick Starter
• Built-In Rear Grab Handles
• 36.6” Seat Height
• Storage for Tool Kit
• 6-Month Limited Warranty
• Quick-Access Air Filter