Will this fit a whistle miwok 1385V bike

Its universal so will fit many bikes as long as you have the right carrier

Why the sudden £10 increase in price?

It does go up and down in price every other week I payed 19.99 then the following week it went to 11.99 it depends on what they sell

What derailleur hanger dose it need because it doesn't seem to fit on mine it can still twist after I tightened it all the way

Use the old one off your old derullier other than that not sure

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Description

⚙️ Shift like a pro, ride like you own the trail!

CLASSIC RELIABILITY - Top-Normal derailleur action delivers trusted Shimano shifting precision every ride.
NOISE WEAR SLAYER - Oversize 15-tooth tensioner and 13-tooth guide pulleys minimize noise and extend drivetrain life.
LIGHTWEIGHT POWERHOUSE - At just 326g, it balances durability with featherlight performance for every trail.
PRECISION SHIFTING MASTERY - Wide link design ensures rock-solid rigidity and ultra-smooth gear changes.
VERSATILE SPEED COMPATIBILITY - Seamlessly supports 7 and 8-speed drivetrains for flexible MTB setups.

The Shimano Altus RD-M310 is a robust 7/8-speed mountain bike rear derailleur featuring a 43-tooth chain wrap capacity and a wide link design for enhanced rigidity and precise shifting. Its oversize pulleys reduce noise and wear, while its lightweight 326g metal construction ensures durability without the bulk. Designed for direct clamp-on mounting, this sleek black derailleur offers reliable top-normal action compatible with Shimano and SRAM drivetrains, making it an essential upgrade for serious MTB enthusiasts.

Specifications

Mounting type	Clamp-On Mount
Product dimensions	16L x 16W x 12H centimetres
Manufacturer	Shimano
UPC	520307452833 713831856783 620307457880 689228130920 750076832677 787766457704
Global Trade Identification Number	00689228130920, 04524667130925
Bike type	mountain
Color	Black
Size	7/8 Speed Smart Cage
Style	Cycling
Material composition	100
Weight	499 g
Material type	Metal
Number of items	22
Sport	Cycling
Included components	Shimano Altus RD-M310 Rear Derailleur 8 speed Black SGS - Long Cage
Batteries included?	No
Department	Cycling
Item model number	RDM310DL
ASIN	B005CMUQU0

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