BOYESEN Rad Valve Intake Boot for KAWASAKI KX 250, HONDA CR 125 and SUZUKI RM 125 1999-2017

On HONDA CR 125, KAWASAKI KX 250 and SUZUKI RM 125 from 1999 to 2017, the BOYESEN BOYRB-15 Rad Valve intake boot fits in place of the original part. Over time and with heat, the intake boot hardens and cracks. Replacing it guarantees a tight seal between the carburettor and the reed valve block, which is essential for consistent carburation.

Specifications

• Brand: BOYESEN
• Manufacturer part number: BOYRB-15
• EAN code: 804429503773
• Weight: 300 g
• Engine: 2-stroke

When to replace it?

• Boot hardened, cracked or distorted.
• Unstable idle or hanging revs: possible air leak.
• Carburettor moving in the boot even with the clamp tight.

Check the boot every time you remove the carburettor or the reed valve block. Check the model and model years: it must match your Rad Valve reed block.

Fitting tips

1. Remove the carburettor, then the boot to be replaced.
2. Clean the mating surfaces and fit the new boot with a new reed block gasket.
3. Tighten the bolts in a criss-cross pattern to the specified torque, then push the carburettor fully into the boot and tighten its clamp.
4. Start the engine and check that it holds a steady idle.

Why BOYESEN?

Boyesen is an American brand specialising in the intake and the engine covers of two-stroke engines: reed petals, RAD Valve reed blocks, engine covers and Supercooler water pumps.

Spare parts and items to plan

• Reed block gasket : V FORCE G308 · V FORCE G307
• Reed petals : BOYESEN · V FORCE

Frequently asked questions

Will this boot fit without a Rad Valve block?
It's designed for a Boyesen Rad Valve reed block: check compatibility with your bike.

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
HONDA CR 125 2007
HONDA CR 125 2006
HONDA CR 125 2005
KAWASAKI KX 250 2017
KAWASAKI KX 250 2016
KAWASAKI KX 250 2015
KAWASAKI KX 250 2014
KAWASAKI KX 250 2013
KAWASAKI KX 250 2012
KAWASAKI KX 250 2011
KAWASAKI KX 250 2010
KAWASAKI KX 250 2009
KAWASAKI KX 250 2008
KAWASAKI KX 250 2007
KAWASAKI KX 250 2006
KAWASAKI KX 250 2005
KAWASAKI KX 250 2004
KAWASAKI KX 250 2003
KAWASAKI KX 250 2002
KAWASAKI KX 250 2001
SUZUKI RM 125 2000
SUZUKI RM 125 1999