Engine

Montesa 4rt Gear Shift Fork Left 24221-KRN-730

Montesa 4rt Gear Shift Fork Right 24211-KRN-730

Montesa 4rt Inner Clutch Gasket11394-NN4-000

Kickstart ratchet guide plate used to hold the ratchet apart when the engine starts. Fits all the Montesa Cota 4RT, 4Ride, Repsol, 300RR, 301RR mod...

The engine protector prevents water and mud splashing up onto the engine and clogging up around the cylinder.Features:* made of strong plastic with...

Montesa 4rt Oil Filter Cover 15412-NN4-000

Honda 91302-PA9-003 O-RING (39.8X2.2) Oil Filter Cover Large O-Ring 4rt

Montesa 4rt Oil Filter Cover O-Ring Small91303-HA0-004

Montesa 4rt Radiator 19010-NN4-013

Montesa 4rt Radiator Guard 19033-NN4-000 

 Montesa 4rt Ring Set fits models Cota 4rt 2005 Cota 4rt 2006 Cota 4rt 2007 Cota 4rt 2008 Cota 4rt 2009 Cota 4rt 2012

KIT CYLINDER-PISTON BIG-BORE FOR MONTESA-HRC 280cc 4RT. High quality product. More capacity gives the engine more torque on bottom and more power o...

KIT CYLINDER-PISTON BIG-BORE FOR MONTESA-HRC 300cc 4RT. High quality product. More capacity gives the engine more torque on bottom and more power o...

The Jitsie silicon radiator hoses are slightly thicker than the original models and reinforced with three layers of polyester which make them a lot...

AS3 Performance silicone radiator hoses are made from strong high quality silicone with a polyester reinforcement which makes them much stronger an...

Montesa 4RT Sump Guard RubberNew Improved One Piece Rubber, which makes easier to install over the 2 piece rubber.Will Fit All 4RT 2005-2023

Montesa 4rt Water Pump Protector 05-25 COLOR: Factory Black 

Montesa 315 water pump cover bolt (see photo) Montesa 4rt water pump cover bolt (see photo) Montesa 4rt Rear Brake Pedal bolt (see photo) 96001-060...

Montesa Clutch Cover 4rt

Montesa - Hex Head Flanged Bolt - M6 x 55mm Clutch Cover Bolt

The clutch cover protector prevents the clutch cover from getting scratched or damaged during a crash.Features:* made of strong plastic with a nice...

Montesa Clutch Cover Protector Carbon Fiber Ferrer Racing Part Montesa 4rt

Apico factory racing clutch friction plates are manufactured using only the very best Paper or cork material available.A perfect up-grade to the st...

Apico factory racing clutch friction plates are manufactured using only the very best Paper or cork material available.A perfect up-grade to the st...

Black oring for the clutch slave cylinder piston on the Montesa trials bikes.O-Ring is #14 in the picture Dimensions.Outer diameter 27.2mmInner dia...

Green oring for the clutch slave cylinder piston on the Montesa trials bikes.O-ring is #15 in the pictureDimensions.Outer diameter 26.6mmInner diam...

Apico Factory Racing clutch kits offer an OEM quality clutch function and durability with a fantastic feel of transferring the power to the wheels....

Honda Montesa 315r Counter shaft circlip Front Sprocket clip 20mm

Montesa Counter Shaft Seal91201-KS6-004

Montesa Crankcase Left Side 4rt 11200-NN4-000 2005-

Honda SPRING, DRUM STOPPER 24435-KA3-710

Montesa Ferrer Racing M10x130 Engine Bolt Aluminum 4rt Front engine bolt RACING AM-01 In 7075 aluminum 55 grams

Montesa Fan Blade19009-KT7-000

The Jitsie flywheel cover protector avoids serious damage to the engine case of the 4RT in the event your chain comes off or snaps.Features:* CNC m...

Montesa Kickstart Gear 4rt 28230-NN4-000 See part number to verify

Montesa 315r & 4rt Kickstart Seal 91205-KA3-712

Manufactured from forged 7075 Aero-grade aluminium, each kick start is then anodized to a specific manufacturers color, and has a laser-etched Apic...

Montesa Kickstarter OEM 05-14 Shorter than the newer version 28300-NN4-000 Will fit all 4rt years

Montesa Shift Shaft Seal OIL SEAL 14X22X5 91203-KA4-771

Montesa Slave Cylinder Piston315r & 4rt 22863-NN3-000

Inside Diameter: 12mmOutside Diameter: 28mmWidth: 7mmNo SealsAs used on the water pump on the Montesa Cota 315R and 4RT

Montesa Water Pump Copper Washer 7mmThis washer is on the backside of the impeller 90447-KE1-000

Montesa Water Pump Cover BoltOEM Flange Bolt 6x5096001-0605000#13 in photo (sold as individual)

Water pump outer housing for the Montesa 315 Discontinued part 19221-NN3-000

Montesa Water Pump Impeller 19215-GC4-731

Montesa inner water pump seal, used to seal out the oil on the water pump shaft.12x22x5Fits the 315R and 4RT Montesa Cota trials bikes.

Montesa 315r & 4rt Outer Water Pump Seal 1997-91211-KA3-761

Water pump shaft and gear for the Montesa 4RT19240-NN4-010Supersedes: 19240-NN4-000