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ZEFAL · Rear MTB mudguard for wide tyres
Seatpost-mounted rear mudguard with wide-tyre coverage for wet and muddy MTB rides.
$34.99
PriceIn stock, ready to ship
If you want a rear guard that’s quick to fit and gives proper coverage for modern MTB tyres, the ZEFAL Deflector RM90+ is an easy pick. It’s built for 26 to 29-inch wheels, clears tyres up to 2.8 inches, and the adjustable seatpost mount lets you fine-tune the guard close to the wheel for better spray control.
Sold by Ashburton Cycles
Verified store
Price
$34.99
Weight
238 g
Wheel size
26 / 27.5 / 27.5+ / 29
Max tyre width
2.8
The ZEFAL Deflector RM90+ is a rear MTB mudguard for wide tyres that suits riders who want solid spray protection without moving to a full fixed mudguard setup. The long blade, dual-material spoiler and double-orientation adjustment are all aimed at one thing: getting the guard close to the tyre so it catches more of the muck before it ends up on your back, pack or shock.
For Australian trail riding, that makes it a smart option for winter singletrack, wet fire roads and everyday transport on hardtails that don’t have rack and guard mounts. The MD-Turn seatpost mount is quick to set up on compatible posts, and the reflective ring is a handy touch if your ride home finishes in low light. At 238 g, it stays light enough for regular use while still offering the fuller rear coverage many short clip-on guards miss.
The big buying point here is fit: this model is made for wide MTB tyres up to 2.8 inches and works across 26, 27.5, 27.5+ and 29-inch wheels. If your bike runs a standard rigid seatpost and you want a cleaner, more adjustable rear guard than minimalist strap-on options, this is the practical middle ground. Just note that it is not suitable for telescopic seatposts, so it’s best matched to bikes with a fixed post or a second bike used for commuting, bikepacking or winter trail miles.
Ideal for mountain bikers and trail riders on wide tyres who want more rear spray coverage than a tiny clip-on guard, without fitting a full bolt-on mudguard set.

Built for wide MTB tyres
Designed around modern mountain bike sizes, with compatibility for 26, 27.5, 27.5+ and 29-inch wheels and tyres up to 2.8 inches wide.
Seatpost-mounted MD-Turn fitting
The quick screw-on mount makes setup straightforward on compatible seatposts and lets you remove or refit the guard without a complicated hardware system.
Double-orientation adjustment
You can fine-tune the guard position to sit closer to the wheel, helping improve tyre coverage and reduce spray in wet or muddy conditions.
Dual-material spoiler
The spoiler adds extra coverage while keeping some flexibility at the trailing edge, which helps the guard stay practical for rough off-road use.
Long rear profile for better coverage
With a 640 mm overall length, it offers more meaningful rear protection than very short minimalist guards that mainly protect only the saddle area.
Reflective ring for visibility
A reflective detail adds a little extra visibility in low light, which is useful for commuting or winter rides that finish after dark.
Made in France
Designed by ZEFAL’s R&D team and made in France, with a focus on durable accessory construction for regular riding use.
Every detail as listed by the manufacturer.

ZEFAL is a French cycling accessories brand with roots dating back to 1880. The company’s history includes early links to the development of cycling hardware in France, and the ZEFAL name itself comes from a blend of Zephyr and Duralumin, tied to the launch of its lightweight pump in 1934. Today ZEFAL is based in Jargeau, Loiret, and remains family-led. The brand produces accessories across categories including mudguards, pumps, bottle cages, luggage, lubricants and safety products, with more than 60% of its accessories manufactured in France and a strong focus on durability, testing and practical everyday use.
ZEFAL · Rear MTB mudguard for wide tyres

Seatpost-mounted rear mudguard with wide-tyre coverage for wet and muddy MTB rides.
$34.99
In stockWeight
238 g
Wheel size
26 / 27.5 / 27.5+ / 29
Max tyre width
2.8
Mounting
MD-Turn
If you want a rear guard that’s quick to fit and gives proper coverage for modern MTB tyres, the ZEFAL Deflector RM90+ is an easy pick. It’s built for 26 to 29-inch wheels, clears tyres up to 2.8 inches, and the adjustable seatpost mount lets you fine-tune the guard close to the wheel for better spray control.
The ZEFAL Deflector RM90+ is a rear MTB mudguard for wide tyres that suits riders who want solid spray protection without moving to a full fixed mudguard setup. The long blade, dual-material spoiler and double-orientation adjustment are all aimed at one thing: getting the guard close to the tyre so it catches more of the muck before it ends up on your back, pack or shock.
For Australian trail riding, that makes it a smart option for winter singletrack, wet fire roads and everyday transport on hardtails that don’t have rack and guard mounts. The MD-Turn seatpost mount is quick to set up on compatible posts, and the reflective ring is a handy touch if your ride home finishes in low light. At 238 g, it stays light enough for regular use while still offering the fuller rear coverage many short clip-on guards miss.
The big buying point here is fit: this model is made for wide MTB tyres up to 2.8 inches and works across 26, 27.5, 27.5+ and 29-inch wheels. If your bike runs a standard rigid seatpost and you want a cleaner, more adjustable rear guard than minimalist strap-on options, this is the practical middle ground. Just note that it is not suitable for telescopic seatposts, so it’s best matched to bikes with a fixed post or a second bike used for commuting, bikepacking or winter trail miles.
Ideal for mountain bikers and trail riders on wide tyres who want more rear spray coverage than a tiny clip-on guard, without fitting a full bolt-on mudguard set.
Built for wide MTB tyres
Designed around modern mountain bike sizes, with compatibility for 26, 27.5, 27.5+ and 29-inch wheels and tyres up to 2.8 inches wide.
Seatpost-mounted MD-Turn fitting
The quick screw-on mount makes setup straightforward on compatible seatposts and lets you remove or refit the guard without a complicated hardware system.
Double-orientation adjustment
You can fine-tune the guard position to sit closer to the wheel, helping improve tyre coverage and reduce spray in wet or muddy conditions.
Dual-material spoiler
The spoiler adds extra coverage while keeping some flexibility at the trailing edge, which helps the guard stay practical for rough off-road use.
Long rear profile for better coverage
With a 640 mm overall length, it offers more meaningful rear protection than very short minimalist guards that mainly protect only the saddle area.
Reflective ring for visibility
A reflective detail adds a little extra visibility in low light, which is useful for commuting or winter rides that finish after dark.
Made in France
Designed by ZEFAL’s R&D team and made in France, with a focus on durable accessory construction for regular riding use.