— Carbon fiber wheels ROTOBOX BOOST,
with customized paint job.

— ROTOBOX Rear 44 tooth sprocket.

— Chain racing D.I.D 520 ERV3 X-ring.

— Anti-hopping clutch.

— Titanium bolts PRO-BOLT.

— ROTOBOX Front sprocket, custom
11.5 mm offset 14 tooth sprocket.

— Ceramic painted engine covers.

— Integration of modified YAMAHA R6 swingarm, custom
engineered. Stock R6 swingarm was CAD designed and
machined to custom fit, and welded along with
CNC made segments.

— Supermoto ROTOBOX
tripleclamps, offset 14 mm.

— Supermoto forks ÖHLINS
FG 461. Stroke 255 mm, 2 sets
of springs, 30 mm shorter than
MX forks, 24 mm overhang.

— Rear shock absorber ÖHLINS TTX FLOW, 13
mm shorter than MX version, 65 mm stroke.

Front racing brake master cylinder —
BREMBO XR0.11.71.  

— Front racing brake master cylinder
BREMBO XR0.11.71.  

Front racing brake disc BREMBO T-drive 208 —
A985.48 diameter 320 mm, thick 5.5 mm.  

Front monoblock racing brake caliper —
BREMBO GP4RR.  

Custom radial front caliper carrier. —

— Front racing brake disc BREMBO T-drive 208 —
A985.48 diameter 320 mm, thick 5.5 mm.

— Front monoblock racing brake caliper
BREMBO GP4RR.

— Custom radial front caliper carrier.

Rear racing brake disc BREMBO diameter —
220 mm, thick 4.5mm, customized.  

Rear racing brake caliper BREMBO X20.60.01. —

Custom rear caliper bracket. —

Lightech chain tensioners, rear stand pins. —

Racing custom brake lines. —

— Rear racing brake disc BREMBO diameter
220 mm, thick 4.5mm, customized.

— Rear racing brake caliper BREMBO X20.60.01.

— Custom rear caliper bracket.

— Lightech chain tensioners, rear stand pins.

— Racing custom brake lines.

Customized exhaust, direct flow —
construction, ceramic coated  
pipes, mufler body anodized. 

— Customized exhaust, direct flow
construction, ceramic coated
pipes, mufler body anodized.

Front and rear mudguards —
all new CAD designed and  
3D printed. 

— Front and rear mudguards
all new CAD designed and
3D printed.

Custom instrument holder. —

— Custom instrument holder.

Customized racing seat. —

Custom designed fairings —
with customized paint job. 

— Customized racing seat.

— Custom designed fairings
with customized paint job.

custom

Technical
specifications

Dimensions
Overall lenght 2100 mm
Overall width 830 mm
Overall height 1210 mm
Seat height 900 mm
Wheel base 1450 mm
Triple clamps offset 14 mm
Fork overhang 24 mm
Fork stroke 255 mm
Rear shock absorber stroke 65 mm
Front wheel and tire 17 x 3.5 120/60-17
Rear wheel and tire 17 x 5.5 190/65-17
Wet weight (including full oil and fuel tank) 119 kg

In essence, the main purpose of the build was to use a rear end of a supersport motorbike to get the benefits of a bigger tire and more stiffness on a motocross motorbike. The SPLICE uses rear swingarm of stock Yamaha R6 which was custom engineered and modified to fit to WR450F frame. Along with Rotobox BOOST carbon fiber 5.5” rear wheel and 190 Bridgestone tire the SPLICE becomes all ready for blacktop roads!

SPLICE is the result of use of the most advanced modern technology of reverse engineering, CNC machining and 3D printing, giving a rider an outstanding performance together with a higher level of controllability. Its compact, mass centralized chassis benefits from optimized suspension settings for outstanding handling and turning performance. Additionally, the frame and engine covers surface is protected with special Ceramic coating.

Rotobox introduces SPLICE as its own line of custom build Supermoto Extreme motorbikes offerred in 8 different models

— 2018 and 2019 Yamaha YZ250F,

— 2018 and 2019 Yamaha YZ450F,

— 2018 and 2019 Yamaha WR250F,

— 2018 and 2019 Yamaha WR450F.

Full option SPLICE Rotobox Motorcycle Price
excl.Vat.:


29.830 EUR